GE PACSystems RXi User Manual page 10

8.6
8.6.1
8.6.2
8.6.3
8.6.4
8.6.5
8.7
8.7.1
8.7.2
8.7.3
8.7.4
8.8
8.8.1
8.8.2
8.8.3
8.8.4
Chapter 9
9.1
9.2
9.2.1
9.2.2
9.2.3
9.3
Chapter 10
10.1
10.1.1
10.1.2
10.1.3
10.1.4
10.2
10.2.1
10.2.2
10.3
10.4
10.5
10.6
10.7
10.7.1
10.7.2
10.7.3
GFK-2816F
Client Communications via the Ethernet Interface ................................................ 150
Structure of the Communications Request .................................................. 150
Controlling Communications in the Ladder Program ................................... 153
Monitoring the Communications Channel .................................................... 154
Troubleshooting a Ladder Program ............................................................. 155
Major and Minor Error Codes in the COMMREQ Status Word ................... 156
Modbus TCP Client (Channels) Operation ............................................................ 164
Operation of the Communications Request for Modbus Channels ............. 165
Modbus TCP Channel Commands .............................................................. 166
COMMREQ Example - Modbus TCP Channels ......................................... 182
PACSystems Modbus Client Endian Conversion Example ......................... 186
Ethernet Interface Diagnostics .............................................................................. 187
Diagnostics Tools ......................................................................................... 187
Troubleshooting Common Ethernet Difficulties ........................................... 193
COMMREQ Flooding Can Interrupt Normal Operation ............................... 196
Channels Operation Depends Upon Controller Input Scanning .................. 196
PROFINET IO-Controller Overview ............................................. 197
Ethernet Network Ports ......................................................................................... 197
PROFINET Networks for PACSystems ................................................................. 198
Basic System: One RXi Controller using a single port ................................ 198
Basic System: One RXi Controller using Multiple Ports .............................. 199
Basic System: Third-Party Devices and Proficy Machine Edition Programmer200
Glossary of PROFINET Terms .............................................................................. 201
PROFINET IO-Controller Operation ............................................ 203
PROFINET Operation Overview ........................................................................... 204
PROFINET Communications ....................................................................... 204
Application Relationships ............................................................................. 204
Types of PROFINET Communications ........................................................ 205
External Switch VLAN Priority Settings ....................................................... 205
Operations of the PROFINET IO-Controller in the RXi System ............................ 206
Duplicate PROFINET Device IP Address .................................................... 206
Duplicate PROFINET IO-Controller IP Address .......................................... 207
I/O Scanning .......................................................................................................... 208
Data Coherency..................................................................................................... 209
Performance Factors ............................................................................................. 210
PROFINET IO Update Rate Configuration ............................................................ 211
RXi CPU Operations for PROFINET ..................................................................... 212
Reference ID Variables for the RXi Application ........................................... 212
PNIO_DEV_COMM Function Block ............................................................. 213
DO I/O for Remote IO Modules.................................................................... 214
August 2015
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