path: root/plugins/profinet/packet-pn-rtc-one.c

/* packet-pn-rtc-one.c
 * Routines for PROFINET IO - RTC1 dissection.
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1999 Gerald Combs
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

/*
 * The PN-IO protocol is a field bus protocol related to decentralized
 * periphery and is developed by the PROFIBUS Nutzerorganisation e.V. (PNO),
 * see: www.profibus.com
 *
 *
 * PN-IO is based on the common DCE-RPC and the "lightweight" PN-RT
 * (ethernet type 0x8892) protocols.
 *
 * The context manager (CM) part is handling context information
 * (like establishing, ...) and is using DCE-RPC as its underlying
 * protocol.
 *
 * The actual cyclic data transfer and acyclic notification uses the
 * "lightweight" PN-RT protocol.
 *
 * There are some other related PROFINET protocols (e.g. PN-DCP, which is
 * handling addressing topics).
 *
 * Please note: the PROFINET CBA protocol is independent of the PN-IO protocol!
 */

/*
 * Cyclic PNIO RTC1 Data Dissection:
 *
 * To dissect cyclic PNIO RTC1 frames, this plug-in has to collect important module
 * information out of "Ident OK", "Connect Request" and "Write Response"
 * frames first.
 *
 * The data of Stationname-, -type and -id will be gained out of
 * packet-pn-dcp.c. The header packet-pn.h will transfer those data between
 * those two files.
 *
 * This file is used as a "addon" for packet-dcerpc-pn-io.c. Within "packet-dcerpc-pn-io.c"
 * the defined structures in "packet-pn.h" will be filled with all necessary information.
 * Those informations will be used in thise file to dissect cyclic PNIO RTC1 and PROFIsafe
 * frames. Furthermore since RTC1 is a special frame type of PNIO, this dissection uses the
 * already defined protocol PNIO.
 *
 * Overview for cyclic PNIO RTC1 data dissection functions:
 *   -> dissect_PNIO_C_SDU_RTC1 (general dissection of RTC1)
 */

#include "config.h"

#include <stdio.h>
#include <string.h>
#include <glib.h>
#include <epan/packet.h>
#include <epan/dissectors/packet-dcerpc.h>
#include <epan/proto.h>
#include <epan/expert.h>

#include "packet-pn.h"


#define F_MESSAGE_TRAILER_4BYTE  4      /* PROFIsafe: Defines the Amount of Bytes for CRC and Status-/Controlbyte */
#define PN_INPUT_CR              1      /* PROFINET Input Connect Request value */
#define PN_INPUT_DATADESCRITPION 1      /* PROFINET Input Data Description value */


static int proto_pn_io_rtc1 = -1;

/* General module information */
static int hf_pn_io_frame_info_type = -1;
static int hf_pn_io_frame_info_vendor = -1;
static int hf_pn_io_frame_info_nameofstation = -1;
static int hf_pn_io_frame_info_gsd_found = -1;
static int hf_pn_io_frame_info_gsd_error = -1;
static int hf_pn_io_frame_info_gsd_path = -1;
static int hf_pn_io_io_data_object = -1;
static int hf_pn_io_io_data_object_info_module_diff = -1;
static int hf_pn_io_io_data_object_info_moduleidentnumber = -1;
static int hf_pn_io_io_data_object_info_submoduleidentnumber = -1;

static int hf_pn_io_iocs = -1;
static int hf_pn_io_iops = -1;
static int hf_pn_io_ioxs_extension = -1;
static int hf_pn_io_ioxs_res14 = -1;
static int hf_pn_io_ioxs_instance = -1;
static int hf_pn_io_ioxs_datastate = -1;

/* PROFIsafe statusbyte and controlbyte */
static int hf_pn_io_ps_sb = -1;
static int hf_pn_io_ps_sb_iparOK = -1;
static int hf_pn_io_ps_sb_DeviceFault = -1;
static int hf_pn_io_ps_sb_CECRC = -1;
static int hf_pn_io_ps_sb_WDtimeout = -1;
static int hf_pn_io_ps_sb_FVactivated = -1;
static int hf_pn_io_ps_sb_Toggle_d = -1;
static int hf_pn_io_ps_sb_ConsNr_reset = -1;
static int hf_pn_io_ps_sb_res = -1;
static int hf_pn_io_ps_sb_toggelBitChanged = -1;
static int hf_pn_io_ps_sb_toggelBitChange_slot_nr = -1;
static int hf_pn_io_ps_sb_toggelBitChange_subslot_nr = -1;

static int hf_pn_io_ps_cb = -1;
static int hf_pn_io_ps_cb_iparEN = -1;
static int hf_pn_io_ps_cb_OAReq = -1;
static int hf_pn_io_ps_cb_resetConsNr = -1;
static int hf_pn_io_ps_cb_useTO2 = -1;
static int hf_pn_io_ps_cb_activateFV = -1;
static int hf_pn_io_ps_cb_Toggle_h = -1;
static int hf_pn_io_ps_cb_Chf_ACK = -1;
static int hf_pn_io_ps_cb_loopcheck = -1;
static int hf_pn_io_ps_cb_toggelBitChanged = -1;
static int hf_pn_io_ps_cb_toggelBitChange_slot_nr = -1;
static int hf_pn_io_ps_cb_toggelBitChange_subslot_nr = -1;

/* PROFIsafe */
static int hf_pn_io_ps_f_dest_adr = -1;
static int hf_pn_io_ps_f_data = -1;

static gint ett_pn_io_rtc = -1;
static gint ett_pn_io_ioxs = -1;
static gint ett_pn_io_io_data_object = -1;

static expert_field ei_pn_io_too_many_data_objects = EI_INIT;

static const value_string pn_io_ioxs_extension[] = {
    { 0x00 /*  0*/, "No IOxS octet follows" },
    { 0x01 /*  1*/, "One more IOxS octet follows" },
    { 0, NULL }
};

static const value_string pn_io_ioxs_instance[] = {
    { 0x00 /*  0*/, "Detected by subslot" },
    { 0x01 /*  1*/, "Detected by slot" },
    { 0x02 /*  2*/, "Detected by IO device" },
    { 0x03 /*  3*/, "Detected by IO controller" },
    { 0, NULL }
};

static const value_string pn_io_ioxs_datastate[] = {
    { 0x00 /*  0*/, "Bad" },
    { 0x01 /*  1*/, "Good" },
    { 0, NULL }
};


static const int *ps_sb_fields[] = {
    &hf_pn_io_ps_sb_res,
    &hf_pn_io_ps_sb_ConsNr_reset,
    &hf_pn_io_ps_sb_Toggle_d,
    &hf_pn_io_ps_sb_FVactivated,
    &hf_pn_io_ps_sb_WDtimeout,
    &hf_pn_io_ps_sb_CECRC,
    &hf_pn_io_ps_sb_DeviceFault,
    &hf_pn_io_ps_sb_iparOK,
    NULL
};

static const int *ps_cb_fields[] = {
    &hf_pn_io_ps_cb_loopcheck,
    &hf_pn_io_ps_cb_Chf_ACK,
    &hf_pn_io_ps_cb_Toggle_h,
    &hf_pn_io_ps_cb_activateFV,
    &hf_pn_io_ps_cb_useTO2,
    &hf_pn_io_ps_cb_resetConsNr,
    &hf_pn_io_ps_cb_OAReq,
    &hf_pn_io_ps_cb_iparEN,
    NULL
};

static const int *ioxs_fields[] = {
    &hf_pn_io_ioxs_datastate,
    &hf_pn_io_ioxs_instance,
    &hf_pn_io_ioxs_res14,
    &hf_pn_io_ioxs_extension,
    NULL
};


/* Dissector for PROFIsafe Status Byte */
static int
dissect_pn_io_ps_SB(tvbuff_t *tvb, int offset,
packet_info *pinfo _U_, proto_tree *tree, guint8 *drep _U_, int hfindex, const int **fields)
{

    if (tree) {
        guint8     u8StatusByte;
        proto_item *sb_item;

        u8StatusByte = tvb_get_guint8(tvb, offset);

        /* Add Status Byte subtree */
        sb_item = proto_tree_add_bitmask_with_flags(tree, tvb, offset, hfindex, ett_pn_io_ioxs, fields,
            ENC_LITTLE_ENDIAN, BMT_NO_APPEND);
        proto_item_append_text(sb_item, " (%s)", ((u8StatusByte == 0x20) || (u8StatusByte == 0x00)) ? "normal" : "unnormal");
    }

    return offset + 1;
}


/* Dissector for PROFIsafe Control Byte */
static int
dissect_pn_io_ps_CB(tvbuff_t *tvb, int offset,
packet_info *pinfo _U_, proto_tree *tree, guint8 *drep _U_, int hfindex, const int **fields)
{

    if (tree) {
        guint8     u8ControlByte;
        proto_item *cb_item;

        u8ControlByte = tvb_get_guint8(tvb, offset);

        /* Add Status Byte subtree */
        cb_item = proto_tree_add_bitmask_with_flags(tree, tvb, offset, hfindex, ett_pn_io_ioxs, fields,
            ENC_LITTLE_ENDIAN, BMT_NO_APPEND);
        proto_item_append_text(cb_item, " (%s)", ((u8ControlByte == 0x20) || (u8ControlByte == 0x00) ||
            (u8ControlByte == 0xa0) || (u8ControlByte == 0x80)) ? "normal" : "unnormal");
    }

    return offset + 1;
}


/* Dissector for IOCS (As each IOCS stands for a specific Slot & Subslot) */
static int
dissect_PNIO_IOCS(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree,
            guint8 *drep _U_, int hfindex, guint16 slotNr, guint16 subSlotNr, const int **fields)
{

    if (tree) {
        guint8      u8IOxS;
        proto_item *ioxs_item;

        u8IOxS = tvb_get_guint8(tvb, offset);

        /* Add ioxs subtree */
        ioxs_item = proto_tree_add_bitmask_with_flags(tree, tvb, offset, hfindex,
            ett_pn_io_ioxs, fields, ENC_LITTLE_ENDIAN, BMT_NO_APPEND);
        proto_item_append_text(ioxs_item,
            " (%s%s), Slot: 0x%x, Subslot: 0x%x",
            (u8IOxS & 0x01) ? "another IOxS follows " : "",
            (u8IOxS & 0x80) ? "good" : "bad",
            slotNr,
            subSlotNr);
    }

    return offset + 1;
}


/* dissect the IOxS (IOCS, IOPS) field */
static int
dissect_PNIO_IOxS(tvbuff_t *tvb, int offset,
packet_info *pinfo _U_, proto_tree *tree, guint8 *drep _U_, int hfindex, const int **fields)
{

    if (tree) {
        guint8     u8IOxS;
        proto_item *ioxs_item;

        u8IOxS = tvb_get_guint8(tvb, offset);

        /* Add ioxs subtree */
        ioxs_item = proto_tree_add_bitmask_with_flags(tree, tvb, offset, hfindex,
            ett_pn_io_ioxs, fields, ENC_LITTLE_ENDIAN, BMT_NO_APPEND);
        proto_item_append_text(ioxs_item,
            " (%s%s)",
            (u8IOxS & 0x01) ? "another IOxS follows " : "",
            (u8IOxS & 0x80) ? "good" : "bad");
    }

    return offset + 1;
}


/* Universel dissector for flexibel PROFIsafe Data 8 to 64 Bits */
static int
dissect_pn_io_ps_uint(tvbuff_t *tvb, gint offset, packet_info *pinfo _U_,
    proto_tree *tree, guint8 *drep,
int hfindex, guint8 bytelength, guint64 *pdata)
{
    guint64  data;
    gboolean generalDissection;

    generalDissection = FALSE;

    switch (bytelength) {
    case 1:     /* 8 Bit Safety IO Data */
        data = tvb_get_guint8(tvb, offset);
        if (pdata)
            *pdata = data;
        break;

    case 2:     /* 16 Bit Safety IO Data */
        data = tvb_get_letohs(tvb, offset);
        if (pdata)
            *pdata = data;
        break;

    case 3:     /* 24 Bit Safety IO Data */
        data = tvb_get_letoh24(tvb, offset);
        if (pdata)
            *pdata = data;
        break;

    case 4:     /* 32 Bit Safety IO Data */
        data = tvb_get_letohl(tvb, offset);
        if (pdata)
            *pdata = data;
        break;

    case 5:     /* 40 Bit Safety IO Data */
        data = tvb_get_letoh40(tvb, offset);
        if (pdata)
            *pdata = data;
        break;

    case 6:     /* 48 Bit Safety IO Data */
        data = tvb_get_letoh48(tvb, offset);
        if (pdata)
            *pdata = data;
        break;

    case 7:     /* 56 Bit Safety IO Data */
        data = tvb_get_letoh56(tvb, offset);
        if (pdata)
            *pdata = data;
        break;

    case 8:     /* 64 Bit Safety IO Data */
        data = tvb_get_letoh64(tvb, offset);
        if (pdata)
            *pdata = data;
        break;

    default:    /* Safety IO Data is too big to save it into one variable */
        dissect_pn_user_data(tvb, offset, pinfo, tree, bytelength, "Safety IO Data");
        generalDissection = TRUE;
        break;
    }

    if (tree && generalDissection == FALSE) {
        proto_tree_add_item(tree, hfindex, tvb, offset, bytelength, DREP_ENC_INTEGER(drep));
    }

    return offset + bytelength;
}


/* dissect a PN-IO RTC1 Cyclic Service Data Unit */
int
dissect_PNIO_C_SDU_RTC1(tvbuff_t *tvb, int offset,
    packet_info *pinfo, proto_tree *tree, guint8 *drep _U_)
{
    proto_tree  *data_tree = NULL;

    /* Count & offset for comparation of the arrays */
    guint16     frameOffset;
    guint32     objectCounter;
    gboolean    inputFlag;
    gboolean    outputFlag;
    gboolean    psInfoText;     /* Used to display only once per frame the info text "PROFIsafe Device" */

    proto_item *data_item;
    proto_item *IODataObject_item;
    proto_item *IODataObject_item_info;
    proto_tree *IODataObject_tree;
    proto_item *ModuleID_item;
    proto_item *ModuleDiff_item;

    wmem_strbuf_t *moduleName;

    guint8  toggleBitSb;
    guint8  toggleBitCb;
    guint64 f_data;

    guint8  statusbyte;
    guint8  controlbyte;

    guint16 number_io_data_objects_input_cr;
    guint16 number_iocs_input_cr;
    guint16 number_io_data_objects_output_cr;
    guint16 number_iocs_output_cr;

    conversation_t    *conversation;
    stationInfo       *station_info = NULL;
    iocsObject        *iocs_object;
    ioDataObject      *io_data_object;
    moduleDiffInfo    *module_diff_info;
    wmem_list_frame_t *frame;
    wmem_list_frame_t *frame_diff;

    /* Initial */
    frameOffset = 0;
    f_data = 0;
    inputFlag = FALSE;
    outputFlag = FALSE;
    psInfoText = FALSE;
    number_io_data_objects_input_cr = 0;
    number_iocs_input_cr = 0;
    number_io_data_objects_output_cr = 0;
    number_iocs_output_cr = 0;

    col_set_str(pinfo->cinfo, COL_PROTOCOL, "PNIO");            /* set protocol name */

    data_item = proto_tree_add_protocol_format(tree, proto_pn_io_rtc1, tvb, offset, tvb_captured_length(tvb),
            "PROFINET IO Cyclic Service Data Unit: %u bytes", tvb_captured_length(tvb));
    data_tree = proto_item_add_subtree(data_item, ett_pn_io_rtc);

    /* dissect_dcerpc_uint16(tvb, offset, pinfo, data_tree, drep, hf_pn_io_packedframe_SFCRC, &u16SFCRC); */
    if (!(dissect_CSF_SDU_heur(tvb, pinfo, data_tree, NULL) == FALSE))
        return(tvb_captured_length(tvb));

    /* Only dissect cyclic RTC1 frames, if PN Connect Request has been read */
    conversation = find_conversation(pinfo->num, &pinfo->dl_src, &pinfo->dl_dst, ENDPOINT_NONE, 0, 0, 0);

    /* Detect input data package and output data package */
    if (conversation != NULL) {
        station_info = (stationInfo*)conversation_get_proto_data(conversation, proto_pn_dcp);
        if (station_info != NULL) {
            if (pnio_ps_selection == TRUE) {
                col_set_str(pinfo->cinfo, COL_PROTOCOL, "PNIO_PS");    /* set PROFISsafe protocol name */
            }

            if (addresses_equal(&(pinfo->src), conversation_key_addr1(conversation->key_ptr)) && addresses_equal(&(pinfo->dst), conversation_key_addr2(conversation->key_ptr))) {
                inputFlag = TRUE;
                outputFlag = FALSE;
                number_io_data_objects_input_cr = station_info->ioDataObjectNr;
                number_iocs_input_cr = station_info->iocsNr;
            }

            if (addresses_equal(&(pinfo->dst), conversation_key_addr1(conversation->key_ptr)) && addresses_equal(&(pinfo->src), conversation_key_addr2(conversation->key_ptr))) {
                outputFlag = TRUE;
                inputFlag = FALSE;
                number_io_data_objects_output_cr = station_info->ioDataObjectNr;
                number_iocs_output_cr = station_info->iocsNr;
            }
        }
    }

    /* ------- Input (PNIO) / Response (PNIO_PS) Frame Handling ------- */
    if (inputFlag) {
        if (pnio_ps_selection == TRUE) {
            proto_tree_add_string_format_value(data_tree, hf_pn_io_frame_info_type, tvb,
                offset, 0, "Response", "Response Frame (IO_Device -> IO_Controller)");
        }
        else {
            proto_tree_add_string_format_value(data_tree, hf_pn_io_frame_info_type, tvb,
                offset, 0, "Input", "Input Frame (IO_Device -> IO_Controller)");
        }

        if (station_info != NULL) {
            if (station_info->typeofstation != NULL) {
                proto_tree_add_string_format_value(data_tree, hf_pn_io_frame_info_vendor, tvb, 0,
                    0, station_info->typeofstation, "\"%s\"", station_info->typeofstation);
            }
            if (station_info->nameofstation != NULL) {
                proto_tree_add_string_format_value(data_tree, hf_pn_io_frame_info_nameofstation, tvb, 0,
                    0, station_info->nameofstation, "\"%s\"", station_info->nameofstation);
            }

            if (station_info->gsdPathLength == TRUE) {      /* given path isn't too long for the array */
                if (station_info->gsdFound == TRUE) {       /* found a GSD-file */
                    if (station_info->gsdLocation != NULL) {
                        IODataObject_item_info = proto_tree_add_item(data_tree, hf_pn_io_frame_info_gsd_found, tvb, offset, 0, ENC_NA);
                        proto_item_append_text(IODataObject_item_info, ": \"%s\"", station_info->gsdLocation);
                    }
                }
                else {
                    if (station_info->gsdLocation != NULL) {
                        IODataObject_item_info = proto_tree_add_item(data_tree, hf_pn_io_frame_info_gsd_error, tvb, offset, 0, ENC_NA);
                        proto_item_append_text(IODataObject_item_info, " Please place relevant GSD-file under \"%s\"", station_info->gsdLocation);
                    }
                }
            }
            else {
                IODataObject_item_info = proto_tree_add_item(data_tree, hf_pn_io_frame_info_gsd_path, tvb, offset, 0, ENC_NA);
                proto_item_append_text(IODataObject_item_info, " Please check your GSD-file networkpath. (No Path configured)");
            }
        }

        /* ---- Input IOData-/IOCS-Object Handling ---- */
        objectCounter = number_io_data_objects_input_cr + number_iocs_input_cr;
        if (objectCounter > (guint)tvb_reported_length_remaining(tvb, offset)) {
            expert_add_info_format(pinfo, data_item, &ei_pn_io_too_many_data_objects, "Too many data objects: %d", objectCounter);
            return(tvb_captured_length(tvb));
        }

        while (objectCounter--) {
            /* ---- Input IO Data Object Handling ---- */
            if (station_info != NULL) {
                for (frame = wmem_list_head(station_info->ioobject_data_in); frame != NULL; frame = wmem_list_frame_next(frame)) {
                    io_data_object = (ioDataObject*)wmem_list_frame_data(frame);
                    if (io_data_object->frameOffset == frameOffset) {
                        /* Found following object */

                        IODataObject_item = proto_tree_add_item(data_tree, hf_pn_io_io_data_object, tvb, offset, 0, ENC_NA);
                        IODataObject_tree = proto_item_add_subtree(IODataObject_item, ett_pn_io_io_data_object);

                        /* Control: the Device still uses the correct ModuleIdentNumber? */
                        for (frame_diff = wmem_list_head(station_info->diff_module); frame_diff != NULL; frame_diff = wmem_list_frame_next(frame_diff)) {
                            module_diff_info = (moduleDiffInfo*)wmem_list_frame_data(frame_diff);
                            if (io_data_object->moduleIdentNr != module_diff_info->modulID) {
                                ModuleDiff_item = proto_tree_add_item(IODataObject_tree, hf_pn_io_io_data_object_info_module_diff, tvb, 0, 0, ENC_NA);
                                proto_item_append_text(ModuleDiff_item, ": Device using ModuleIdentNumber 0x%08x instead of 0x%08x", module_diff_info->modulID, io_data_object->moduleIdentNr);
                                break;
                            }
                        }

                        proto_tree_add_uint(IODataObject_tree, hf_pn_io_io_data_object_info_moduleidentnumber, tvb, 0, 0, io_data_object->moduleIdentNr);
                        proto_tree_add_uint(IODataObject_tree, hf_pn_io_io_data_object_info_submoduleidentnumber, tvb, 0, 0, io_data_object->subModuleIdentNr);

                        /* PROFIsafe Supported Inputmodule handling */
                        if (io_data_object->profisafeSupported == TRUE && pnio_ps_selection == TRUE) {
                            if (io_data_object->profisafeSupported == TRUE && psInfoText == FALSE) {
                                /* Only add one information string per device to the infotext */
                                col_append_str(pinfo->cinfo, COL_INFO, ", PROFIsafe Device");    /* Add string to wireshark infotext */
                                psInfoText = TRUE;
                            }

                            proto_tree_add_uint(IODataObject_tree, hf_pn_io_ps_f_dest_adr, tvb, 0, 0, io_data_object->f_dest_adr);

                            /* Get Safety IO Data */
                            if ((io_data_object->length - F_MESSAGE_TRAILER_4BYTE) > 0) {
                                offset = dissect_pn_io_ps_uint(tvb, offset, pinfo, IODataObject_tree, drep, hf_pn_io_ps_f_data,
                                    (io_data_object->length - F_MESSAGE_TRAILER_4BYTE), &f_data);
                            }

                            /* ---- Check for new PNIO data using togglebit ---- */
                            statusbyte = tvb_get_guint8(tvb, offset);
                            toggleBitSb = statusbyte & 0x20;     /* get ToggleBit of StatusByte */

                            if (io_data_object->lastToggleBit != toggleBitSb) {    /* ToggleBit has changed --> new Data incoming */
                                /* Special Filter for ToggleBit within Statusbyte */
                                ModuleID_item = proto_tree_add_uint(IODataObject_tree, hf_pn_io_ps_sb_toggelBitChanged, tvb, offset, 0, toggleBitSb);
                                PROTO_ITEM_SET_HIDDEN(ModuleID_item);

                                ModuleID_item = proto_tree_add_uint(IODataObject_tree, hf_pn_io_ps_sb_toggelBitChange_slot_nr, tvb, offset, 0, io_data_object->slotNr);
                                PROTO_ITEM_SET_HIDDEN(ModuleID_item);

                                ModuleID_item = proto_tree_add_uint(IODataObject_tree, hf_pn_io_ps_sb_toggelBitChange_subslot_nr, tvb, offset, 0, io_data_object->subSlotNr);
                                PROTO_ITEM_SET_HIDDEN(ModuleID_item);
                            }

                            offset = dissect_pn_io_ps_SB(tvb, offset, pinfo, IODataObject_tree, drep, hf_pn_io_ps_sb, ps_sb_fields);
                            offset = dissect_pn_user_data(tvb, offset, pinfo, IODataObject_tree, io_data_object->f_crc_len, "CRC");

                            io_data_object->last_sb_cb = statusbyte;       /* save the value of current statusbyte */
                            io_data_object->lastToggleBit = toggleBitSb;   /* save the value of current togglebit within statusbyte */
                        }    /* END of PROFIsafe Module Handling */

                        else {
                            /* Module is not PROFIsafe supported */
                            offset = dissect_pn_user_data(tvb, offset, pinfo, IODataObject_tree, io_data_object->length, "IO Data");
                        }

                        if (io_data_object->discardIOXS == FALSE) {
                            offset = dissect_PNIO_IOxS(tvb, offset, pinfo, IODataObject_tree, drep, hf_pn_io_iops, ioxs_fields);
                            proto_item_set_len(IODataObject_item, io_data_object->length + 1);     /* Length = Databytes + IOXS Byte */
                        }
                        else {
                            proto_item_set_len(IODataObject_item, io_data_object->length);         /* Length = Databytes */
                        }

                        proto_item_append_text(IODataObject_item, ": Slot: 0x%x Subslot: 0x%x",
                            io_data_object->slotNr, io_data_object->subSlotNr);


                        /* ModuleIdentNr appears not only once in GSD-file -> set module name more generally */
                        if (io_data_object->amountInGSDML > 1) {    /* if ModuleIdentNr only appears once in GSD-file, use the found GSD-file-ModuleName, else ... */
                            if (io_data_object->slotNr == 0) {
                                moduleName = wmem_strbuf_new(wmem_packet_scope(), "Headstation");
                            }
                            else {
                                moduleName = wmem_strbuf_new(wmem_packet_scope(), "Module");
                            }

                            if (io_data_object->profisafeSupported == TRUE) {
                                /* PROFIsafe */
                                if (io_data_object->length >= 5) {        /* 5 due to 3 CRC bytes &  1 status byte & (at least) 1 data byte */
                                    wmem_strbuf_append(moduleName, ", DI");
                                }
                                else {
                                    wmem_strbuf_append(moduleName, ", DO");
                                }
                            }
                            else {
                                /* PROFINET */
                                if (io_data_object->length > 0) {
                                    wmem_strbuf_append(moduleName, ", DI");
                                }
                                else {
                                    wmem_strbuf_append(moduleName, ", DO");
                                }
                            }

                            io_data_object->moduleNameStr = wmem_strdup(wmem_file_scope(), wmem_strbuf_get_str(moduleName));
                        }

                        proto_item_append_text(IODataObject_item, " ModuleName: \"%s\"", io_data_object->moduleNameStr);

                        /* emphasize the PROFIsafe supported Modul */
                        if (io_data_object->profisafeSupported == TRUE && pnio_ps_selection == TRUE) {
                            (proto_item_append_text(IODataObject_item, " (PROFIsafe Module)"));
                        }


                        /* Set frameOffset to its new value, to find the next object */
                        frameOffset = frameOffset + io_data_object->length;  /* frameOffset = current value + data bytes */
                        if (io_data_object->discardIOXS == FALSE) {
                            frameOffset = frameOffset + 1;      /* frameOffset = current value + iops byte */
                        }
                    }
                }
            }

            /* ---- Input IOCS Object Handling ---- */
            if (station_info != NULL) {
                for (frame = wmem_list_head(station_info->iocs_data_in); frame != NULL; frame = wmem_list_frame_next(frame)) {
                    iocs_object = (iocsObject*)wmem_list_frame_data(frame);
                    if (iocs_object->frameOffset == frameOffset) {
                        offset = dissect_PNIO_IOCS(tvb, offset, pinfo, data_tree, drep, hf_pn_io_iocs, iocs_object->slotNr,
                            iocs_object->subSlotNr, ioxs_fields);

                        /* Set frameOffset to its new value, to find the next object */
                        frameOffset = frameOffset + 1;      /* frameOffset = current value + iops byte */

                        break;
                    }
                }
            }
        }

        /* Dissect padding */
        offset = dissect_pn_user_data(tvb, offset, pinfo, tree, tvb_captured_length_remaining(tvb, offset), "GAP and RTCPadding");
    }   /* END of Input Frame Handling */

    /* ----- Output (PNIO) / Request (PNIO_PS) Frame Handling ------ */
    else if (outputFlag) {
        if (pnio_ps_selection == TRUE) {
            proto_tree_add_string_format_value(data_tree, hf_pn_io_frame_info_type, tvb,
                offset, 0, "Request", "Request Frame (IO_Controller -> IO_Device)");
        }
        else {
            proto_tree_add_string_format_value(data_tree, hf_pn_io_frame_info_type, tvb,
                offset, 0, "Output", "Output Frame (IO_Controller -> IO_Device)");
        }

        if (station_info != NULL) {
            if (station_info->typeofstation != NULL) {
                proto_tree_add_string_format_value(data_tree, hf_pn_io_frame_info_vendor, tvb, 0,
                    0, station_info->typeofstation, "\"%s\"", station_info->typeofstation);
            }
            if (station_info->nameofstation != NULL) {
                proto_tree_add_string_format_value(data_tree, hf_pn_io_frame_info_nameofstation, tvb, 0,
                    0, station_info->nameofstation, "\"%s\"", station_info->nameofstation);
            }

            if (station_info->gsdPathLength == TRUE) {      /* given path isn't too long for the array */
                if (station_info->gsdFound == TRUE) {       /* found a GSD-file */
                    if (station_info->gsdLocation != NULL) {
                        IODataObject_item_info = proto_tree_add_item(data_tree, hf_pn_io_frame_info_gsd_found, tvb, offset, 0, ENC_NA);
                        proto_item_append_text(IODataObject_item_info, ": \"%s\"", station_info->gsdLocation);
                    }
                }
                else {
                    if (station_info->gsdLocation != NULL) {
                        IODataObject_item_info = proto_tree_add_item(data_tree, hf_pn_io_frame_info_gsd_error, tvb, offset, 0, ENC_NA);
                        proto_item_append_text(IODataObject_item_info, " Please place relevant GSD-file under \"%s\"", station_info->gsdLocation);
                    }
                }
            }
            else {
                IODataObject_item_info = proto_tree_add_item(data_tree, hf_pn_io_frame_info_gsd_path, tvb, offset, 0, ENC_NA);
                proto_item_append_text(IODataObject_item_info, " Please check your GSD-file networkpath. (No Path configured)");
            }
        }

        /* ---- Output IOData-/IOCS-Object Handling ---- */
        objectCounter = number_io_data_objects_output_cr + number_iocs_output_cr;
        if (objectCounter > (guint)tvb_reported_length_remaining(tvb, offset)) {
            expert_add_info_format(pinfo, data_item, &ei_pn_io_too_many_data_objects, "Too many data objects: %d", objectCounter);
            return(tvb_captured_length(tvb));
        }
        while (objectCounter--) {
            /* ---- Output IO Data Object Handling ---- */
            if (station_info != NULL) {
                for (frame = wmem_list_head(station_info->ioobject_data_out); frame != NULL; frame = wmem_list_frame_next(frame)) {
                    io_data_object = (ioDataObject*)wmem_list_frame_data(frame);
                    if (io_data_object != NULL && io_data_object->frameOffset == frameOffset) {
                        /* Found following object */

                        IODataObject_item = proto_tree_add_item(data_tree, hf_pn_io_io_data_object, tvb, offset, 0, ENC_NA);
                        IODataObject_tree = proto_item_add_subtree(IODataObject_item, ett_pn_io_io_data_object);

                        /* Control: the Device still uses the correct ModuleIdentNumber? */
                        for (frame_diff = wmem_list_head(station_info->diff_module); frame_diff != NULL; frame_diff = wmem_list_frame_next(frame_diff)) {
                            module_diff_info = (moduleDiffInfo*)wmem_list_frame_data(frame_diff);
                            if (io_data_object->moduleIdentNr != module_diff_info->modulID) {
                                ModuleDiff_item = proto_tree_add_item(IODataObject_tree, hf_pn_io_io_data_object_info_module_diff, tvb, 0, 0, ENC_NA);
                                proto_item_append_text(ModuleDiff_item, ": Device using ModuleIdentNumber 0x%08x instead of 0x%08x", module_diff_info->modulID, io_data_object->moduleIdentNr);
                                break;
                            }
                        }

                        proto_tree_add_uint(IODataObject_tree, hf_pn_io_io_data_object_info_moduleidentnumber, tvb, 0, 0, io_data_object->moduleIdentNr);
                        proto_tree_add_uint(IODataObject_tree, hf_pn_io_io_data_object_info_submoduleidentnumber, tvb, 0, 0, io_data_object->subModuleIdentNr);

                        if (io_data_object->profisafeSupported == TRUE && pnio_ps_selection == TRUE) {
                            if (io_data_object->profisafeSupported == TRUE && psInfoText == FALSE) {
                                /* Only add one information string per device to the infotext */
                                col_append_str(pinfo->cinfo, COL_INFO, ", PROFIsafe Device");    /* Add string to wireshark infotext */
                                psInfoText = TRUE;
                            }

                            proto_tree_add_uint(IODataObject_tree, hf_pn_io_ps_f_dest_adr, tvb, 0, 0, io_data_object->f_dest_adr);

                            /* Get Safety IO Data */
                            if ((io_data_object->length - F_MESSAGE_TRAILER_4BYTE) > 0) {
                                offset = dissect_pn_io_ps_uint(tvb, offset, pinfo, IODataObject_tree, drep, hf_pn_io_ps_f_data,
                                    (io_data_object->length - F_MESSAGE_TRAILER_4BYTE), &f_data);
                            }

                            /* ---- Check for new PNIO data using togglebit ---- */
                            controlbyte = tvb_get_guint8(tvb, offset);
                            toggleBitCb = controlbyte & 0x20;               /* get ToggleBit of Controlbyte */

                            if (io_data_object->lastToggleBit != toggleBitCb) {   /* ToggleBit has changed --> new Data incoming */
                                /* Special Filter for ToggleBit within Controlbyte */
                                ModuleID_item = proto_tree_add_uint(IODataObject_tree, hf_pn_io_ps_cb_toggelBitChanged, tvb, offset, 0, toggleBitCb);
                                PROTO_ITEM_SET_HIDDEN(ModuleID_item);

                                ModuleID_item = proto_tree_add_uint(IODataObject_tree, hf_pn_io_ps_cb_toggelBitChange_slot_nr, tvb, offset, 0, io_data_object->slotNr);
                                PROTO_ITEM_SET_HIDDEN(ModuleID_item);

                                ModuleID_item = proto_tree_add_uint(IODataObject_tree, hf_pn_io_ps_cb_toggelBitChange_subslot_nr, tvb, offset, 0, io_data_object->subSlotNr);
                                PROTO_ITEM_SET_HIDDEN(ModuleID_item);
                            }

                            offset = dissect_pn_io_ps_CB(tvb, offset, pinfo, IODataObject_tree, drep, hf_pn_io_ps_cb, ps_cb_fields);
                            offset = dissect_pn_user_data(tvb, offset, pinfo, IODataObject_tree, io_data_object->f_crc_len, "CRC");

                            io_data_object->last_sb_cb = controlbyte;         /* save the value of current controlbyte */
                            io_data_object->lastToggleBit = toggleBitCb;      /* save the value of current togglebit within controlbyte */
                        }    /* End of PROFIsafe Module Handling */
                        else {
                            /* Module is not PROFIsafe supported */
                            offset = dissect_pn_user_data(tvb, offset, pinfo, IODataObject_tree, io_data_object->length, "IO Data");
                        }

                        if (io_data_object->discardIOXS == FALSE) {
                            offset = dissect_PNIO_IOxS(tvb, offset, pinfo, IODataObject_tree, drep, hf_pn_io_iops, ioxs_fields);
                            proto_item_set_len(IODataObject_item, io_data_object->length + 1);        /* Length = Databytes + IOXS Byte */
                        }
                        else {
                            proto_item_set_len(IODataObject_item, io_data_object->length);            /* Length = Databytes */
                        }

                        proto_item_append_text(IODataObject_item, ": Slot: 0x%x Subslot: 0x%x",
                            io_data_object->slotNr, io_data_object->subSlotNr);


                        /* ModuleIdentNr appears not only once in GSD-file -> set module name more generally */
                        if (io_data_object->amountInGSDML > 1) {    /* if ModuleIdentNr only appears once in GSD-file, use the found GSD-file-ModuleName, else ... */
                            if (io_data_object->slotNr == 0) {
                                moduleName = wmem_strbuf_new(wmem_packet_scope(), "Headstation");
                            }
                            else {
                                moduleName = wmem_strbuf_new(wmem_packet_scope(), "Module");
                            }

                            if (io_data_object->profisafeSupported == TRUE) {
                                /* PROFIsafe */
                                if (io_data_object->length >= 5) {        /* 5 due to 3 CRC bytes &  1 status byte & (at least) 1 data byte */
                                    wmem_strbuf_append(moduleName, ", DO");
                                }
                                else {
                                    wmem_strbuf_append(moduleName, ", DI");
                                }
                            }
                            else {
                                /* PROFINET */
                                if (io_data_object->length > 0) {
                                    wmem_strbuf_append(moduleName, ", DO");
                                }
                                else {
                                    wmem_strbuf_append(moduleName, ", DI");
                                }
                            }

                            io_data_object->moduleNameStr = wmem_strdup(wmem_file_scope(), wmem_strbuf_get_str(moduleName));
                        }

                        proto_item_append_text(IODataObject_item, " ModuleName: \"%s\"", io_data_object->moduleNameStr);

                        /* emphasize the PROFIsafe supported Modul */
                        if (io_data_object->profisafeSupported == TRUE && pnio_ps_selection == TRUE) {
                            proto_item_append_text(IODataObject_item, " (PROFIsafe Module)");
                        }

                        /* Set frameOffset to its new value, to find the next object */
                        frameOffset = frameOffset + io_data_object->length; /* frameOffset = current value + data bytes */
                        if (io_data_object->discardIOXS == FALSE) {
                            frameOffset = frameOffset + 1;      /* frameOffset = current value + iops byte */
                        }
                    }
                }
            }

            /* ---- Output IOCS Object Handling ---- */
            if (station_info != NULL) {
                for (frame = wmem_list_head(station_info->iocs_data_out); frame != NULL; frame = wmem_list_frame_next(frame)) {
                    iocs_object = (iocsObject*)wmem_list_frame_data(frame);
                    if (iocs_object->frameOffset == frameOffset) {
                        offset = dissect_PNIO_IOCS(tvb, offset, pinfo, data_tree, drep, hf_pn_io_iocs, iocs_object->slotNr,
                            iocs_object->subSlotNr, ioxs_fields);

                        /* Set frameOffset to its new value, to find the next object */
                        frameOffset = frameOffset + 1;      /* frameOffset = current value + iops byte */

                        break;
                    }
                }
            }
        }

        /* Dissect padding */
        offset = dissect_pn_user_data(tvb, offset, pinfo, tree, tvb_captured_length_remaining(tvb, offset), "GAP and RTCPadding");
    }   /* END of Output Frame Handling */

    return offset;
}


void
init_pn_io_rtc1(int proto)
{
    static hf_register_info hf[] = {
        { &hf_pn_io_io_data_object,
            { "IODataObject", "pn_io.io_data_object",
            FT_NONE, BASE_NONE, NULL, 0x0,
            NULL, HFILL }
        },
        { &hf_pn_io_io_data_object_info_module_diff,
            { "Difference", "pn_io.io_data_object.diff_module",
            FT_NONE, BASE_NONE, NULL, 0x0,
            NULL, HFILL }
        },
        { &hf_pn_io_io_data_object_info_moduleidentnumber,
            { "ModuleIdentNumber", "pn_io.io_data_object.module_nr",
            FT_UINT32, BASE_HEX, NULL, 0x0,
            NULL, HFILL }
        },
        { &hf_pn_io_io_data_object_info_submoduleidentnumber,
            { "SubmoduleIdentNumber", "pn_io.io_data_object.submodule_nr",
            FT_UINT32, BASE_HEX, NULL, 0x0,
            NULL, HFILL }
        },
        { &hf_pn_io_frame_info_type,
            { "PN Frame Type", "pn_io.frame_info.type",
            FT_STRING, BASE_NONE, NULL, 0x0,
            NULL, HFILL }
        },
        { &hf_pn_io_frame_info_vendor,
            { "DeviceVendorValue", "pn_io.frame_info.vendor",
            FT_STRING, BASE_NONE, NULL, 0x0,
            NULL, HFILL }
        },
        { &hf_pn_io_frame_info_nameofstation,
            { "NameOfStation", "pn_io.frame_info.nameofstation",
            FT_STRING, BASE_NONE, NULL, 0x0,
            NULL, HFILL }
        },
        { &hf_pn_io_frame_info_gsd_found,
            { "GSD-file found", "pn_io.frame_info.gsd_found",
            FT_NONE, BASE_NONE, NULL, 0x0,
            NULL, HFILL }
        },
        { &hf_pn_io_frame_info_gsd_error,
            { "GSD-file not found.", "pn_io.frame_info.gsd_error",
            FT_NONE, BASE_NONE, NULL, 0x0,
            NULL, HFILL }
        },
        { &hf_pn_io_frame_info_gsd_path,
            { "GSD-file networkpath failure!", "pn_io.frame_info.gsd_path",
            FT_NONE, BASE_NONE, NULL, 0x0,
            NULL, HFILL }
        },
        { &hf_pn_io_iocs,
            { "IOCS", "pn_io.ioxs",
            FT_UINT8, BASE_HEX, NULL, 0x0,
            NULL, HFILL }
        },
        { &hf_pn_io_iops,
            { "IOPS", "pn_io.ioxs",
            FT_UINT8, BASE_HEX, NULL, 0x0,
            NULL, HFILL }
        },
        { &hf_pn_io_ioxs_extension,
            { "Extension", "pn_io.ioxs.extension",
            FT_UINT8, BASE_HEX, VALS(pn_io_ioxs_extension), 0x01,
            NULL, HFILL }
        },
        { &hf_pn_io_ioxs_res14,
            { "Reserved", "pn_io.ioxs.res14",
            FT_UINT8, BASE_HEX, NULL, 0x1E,
            NULL, HFILL }
        },
        { &hf_pn_io_ioxs_instance,
            { "Instance", "pn_io.ioxs.instance",
            FT_UINT8, BASE_HEX, VALS(pn_io_ioxs_instance), 0x60,
            NULL, HFILL }
        },
        { &hf_pn_io_ioxs_datastate,
            { "DataState", "pn_io.ioxs.datastate",
            FT_UINT8, BASE_HEX, VALS(pn_io_ioxs_datastate), 0x80,
            NULL, HFILL }
        },
        /* PROFIsafe parameter */
        /* Status Byte & Control Byte for PROFIsafe --- dissector handle */
        { &hf_pn_io_ps_sb,
            { "Status Byte", "pn_io.ps.sb",
            FT_UINT8, BASE_HEX, NULL, 0x0,
            NULL, HFILL }
        },
        { &hf_pn_io_ps_sb_toggelBitChanged,
            { "Status Byte", "pn_io.ps.sb.toggle_d_changed",
            FT_UINT8, BASE_DEC, NULL, 0x00,
            NULL, HFILL }
        },
        { &hf_pn_io_ps_sb_toggelBitChange_slot_nr,
            { "Slot_Number", "pn_io.ps.sb.toggle_d_changed.slot",
            FT_UINT16, BASE_DEC, NULL, 0x0,
            NULL, HFILL }
        },
        { &hf_pn_io_ps_sb_toggelBitChange_subslot_nr,
            { "Sub_Slot_Number", "pn_io.ps.sb.toggle_d_changed.subslot",
            FT_UINT16, BASE_DEC, NULL, 0x0,
            NULL, HFILL }
        },
        { &hf_pn_io_ps_cb,
            { "Control Byte", "pn_io.ps.cb",
            FT_UINT8, BASE_HEX, NULL, 0x0,
            NULL, HFILL }
        },
        { &hf_pn_io_ps_cb_toggelBitChanged,
            { "Control Byte", "pn_io.ps.cb.toggle_h_changed",
            FT_UINT8, BASE_DEC, NULL, 0x00,
            NULL, HFILL }
        },
        { &hf_pn_io_ps_cb_toggelBitChange_slot_nr,
            { "Slot_Number", "pn_io.ps.cb.toggle_h_changed.slot",
            FT_UINT16, BASE_DEC, NULL, 0x0,
            NULL, HFILL }
        },
        { &hf_pn_io_ps_cb_toggelBitChange_subslot_nr,
            { "Sub_Slot_Number", "pn_io.ps.cb.toggle_h_changed.subslot",
            FT_UINT16, BASE_DEC, NULL, 0x0,
            NULL, HFILL }
        },
        /* Structures for dissecting Status Byte & Control Byte PROFIsafe ---dissector details */
        { &hf_pn_io_ps_sb_iparOK,
            { "iPar_OK - F-Device has new iParameter values assigned", "pn_io.ps.sb.iPar_OK",
            FT_UINT8, BASE_HEX, NULL, 0x01,
            NULL, HFILL }
        },
        { &hf_pn_io_ps_sb_DeviceFault,
            { "Device_Fault - Failure exists in F-Device or F-Module", "pn_io.ps.sb.DeviceFault",
            FT_UINT8, BASE_HEX, NULL, 0x02,
            NULL, HFILL }
        },
        { &hf_pn_io_ps_sb_CECRC,
            { "CE_CRC - CRC Communication fault", "pn_io.ps.sb.CE_CRC",
            FT_UINT8, BASE_HEX, NULL, 0x04,
            NULL, HFILL }
        },
        { &hf_pn_io_ps_sb_WDtimeout,
            { "WD_timeout - WatchDog timeout Communication fault", "pn_io.ps.sb.WD_timeout",
            FT_UINT8, BASE_HEX, NULL, 0x08,
            NULL, HFILL }
        },
        { &hf_pn_io_ps_sb_FVactivated,
            { "FV_activated - Fail-safe values (FV) activated", "pn_io.ps.sb.FV_activated",
            FT_UINT8, BASE_HEX, NULL, 0x10,
            NULL, HFILL }
        },
        { &hf_pn_io_ps_sb_Toggle_d,
            { "Toggle_d - Device-based Toggle Bit", "pn_io.ps.sb.Toggle_d",
            FT_UINT8, BASE_HEX, NULL, 0x20,
            NULL, HFILL }
        },
        { &hf_pn_io_ps_sb_ConsNr_reset,
            { "cons_nr_R - F-Device has reset its consecutive number counter", "pn_io.ps.sb.cons_nr_R",
            FT_UINT8, BASE_HEX, NULL, 0x40,
            NULL, HFILL }
        },
        { &hf_pn_io_ps_sb_res,
            { "Bit7 - reserved for future releases", "pn_io.ps.sb.bit7",
            FT_UINT8, BASE_HEX, NULL, 0x80,
            NULL, HFILL }
        },
        { &hf_pn_io_ps_cb_iparEN,
            { "iPar_EN - iParameter assignment deblocked", "pn_io.ps.cb.iparEN",
            FT_UINT8, BASE_HEX, NULL, 0x01,
            NULL, HFILL }
        },
        { &hf_pn_io_ps_cb_OAReq,
            { "OA_Req - Operator acknowledge requested", "pn_io.ps.cb.OA_Req",
            FT_UINT8, BASE_HEX, NULL, 0x02,
            NULL, HFILL }
        },
        { &hf_pn_io_ps_cb_resetConsNr,
            { "R_cons_nr - Set the Virtual Consecutive Number within the F-Device to be \"0\"", "pn_io.ps.cb.R_cons_nr",
            FT_UINT8, BASE_HEX, NULL, 0x04,
            NULL, HFILL }
        },
        { &hf_pn_io_ps_cb_useTO2,
            { "Bit3 - Reserved or Use the secondary watchdog (Use_TO2)", "pn_io.ps.cb.bit3",
            FT_UINT8, BASE_HEX, NULL, 0x08,
            NULL, HFILL }
        },
        { &hf_pn_io_ps_cb_activateFV,
            { "activate_FV - Fail-safe values (FV) to be activated", "pn_io.ps.cb.activate_FV",
            FT_UINT8, BASE_HEX, NULL, 0x10,
            NULL, HFILL }
        },
        { &hf_pn_io_ps_cb_Toggle_h,
            { "Toggle_h - Host-based Toggle Bit", "pn_io.ps.cb.Toggle_h",
            FT_UINT8, BASE_HEX, NULL, 0x20,
            NULL, HFILL }
        },
        { &hf_pn_io_ps_cb_Chf_ACK,
            { "Bit6 - Reserved or Operator acknowledge after cleared channel fault (ChF_Ack)", "pn_io.ps.cb.bit6",
            FT_UINT8, BASE_HEX, NULL, 0x40,
            NULL, HFILL }
        },
        { &hf_pn_io_ps_cb_loopcheck,
            { "Bit7 - Reserved or Loop-back check (Loopcheck, shall be set to 1)", "pn_io.ps.cb.bit7",
            FT_UINT8, BASE_HEX, NULL, 0x80,
            NULL, HFILL }
        },
        /* PROFIsafe */
        { &hf_pn_io_ps_f_dest_adr,
            { "F_Dest_Add", "pn_io.ps.f_dest_add",
            FT_UINT16, BASE_DEC, NULL, 0x0,
            NULL, HFILL }
        },
        { &hf_pn_io_ps_f_data,
            { "SafetyIO Data", "pn_io.ps.f_data",
            FT_UINT64, BASE_HEX, NULL, 0x0,
            NULL, HFILL }
        },
    };

    static gint *ett[] = {
        &ett_pn_io_rtc,
        &ett_pn_io_ioxs,
        &ett_pn_io_io_data_object
    };

    static ei_register_info ei[] = {
        { &ei_pn_io_too_many_data_objects, { "pn_io.too_many_data_objects", PI_MALFORMED, PI_ERROR, "Too many data objects", EXPFILL }},
    };

    expert_module_t* expert_pn_io;

    proto_pn_io_rtc1 = proto;
    proto_register_field_array(proto, hf, array_length(hf));
    proto_register_subtree_array(ett, array_length(ett));
    expert_pn_io = expert_register_protocol(proto_pn_io_rtc1);
    expert_register_field_array(expert_pn_io, ei, array_length(ei));
}


/*
* Editor modelines  -  http://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/