ProSoft Technology MVI56E-MNETC - Manual (Page 6)

Contents MVI56E-MNETC ♦ ControlLogix Platform
User Manual Modbus TCP/IP Client Enhanced Communication Module
Page 6 of 183 ProSoft Technology, Inc.
February 3, 2013
3.4.1 MNETC.DATA......................................................................................................... 82
3.4.2 MNETC.CONTROL ................................................................................................ 85
3.4.3 MNETC.STATUS .................................................................................................... 85
3.4.4 MNETC.UTIL .......................................................................................................... 86
4 Diagnostics and Troubleshooting 87
4.1 LED Status Indicators ............................................................................................. 88
4.1.1 Scrolling LED Status Indicators .............................................................................. 88
4.1.2 Ethernet LED Indicators .......................................................................................... 89
4.1.3 Non-Scrolling LED Status Indicators ...................................................................... 89
4.1.4 Troubleshooting ...................................................................................................... 90
4.1.5 Clearing a Fault Condition ...................................................................................... 91
4.2 Using the Diagnostics Menu in ProSoft Configuration Builder ............................... 92
4.2.1 Connecting to the Module's Web Page .................................................................. 94
4.2.2 The Diagnostics Menu ............................................................................................ 95
4.2.3 Monitoring Module Information ............................................................................... 96
4.2.4 Monitoring Backplane Information .......................................................................... 96
4.2.5 Monitoring Database Information............................................................................ 98
4.2.6 Monitoring MNETC Server Information .................................................................. 99
4.2.7 Monitoring MNET Client Information....................................................................... 99
4.3 Reading Status Data from the Module ................................................................. 101
4.3.1 Status Data Definition ........................................................................................... 102
4.3.2 Configuration Error Word ...................................................................................... 105
4.3.3 Client Command Errors ........................................................................................ 106
5 Reference 109
5.1 Product Specifications .......................................................................................... 110
5.1.1 General Specifications .......................................................................................... 110
5.1.2 Modbus TCP/IP Specifications ............................................................................. 110
5.1.3 Functional Specifications ...................................................................................... 111
5.1.4 Hardware Specifications ....................................................................................... 111
5.2 Backplane Data Transfer ...................................................................................... 112
5.2.1 Normal Data Transfer Blocks ................................................................................ 114
5.2.2 Special Function Blocks ........................................................................................ 118
5.3 Data Flow between MVI56E-MNETC Module and Processor .............................. 138
5.3.1 Server Driver ......................................................................................................... 138
5.3.2 Client Driver .......................................................................................................... 141
5.3.3 Client Command List ............................................................................................ 142
5.4 Ethernet Cable Specifications ............................................................................... 143
5.4.1 Ethernet Cable Configuration ............................................................................... 143
5.4.2 Ethernet Performance ........................................................................................... 144
5.5 Modbus Protocol Specification ............................................................................. 145
5.5.1 About the Modbus TCP/IP Protocol ...................................................................... 145
5.5.2 Read Coil Status (Function Code 01) ................................................................... 146
5.5.3 Read Input Status (Function Code 02) ................................................................. 147
5.5.4 Read Holding Registers (Function Code 03) ........................................................ 148
5.5.5 Read Input Registers (Function Code 04) ............................................................ 149
5.5.6 Force Single Coil (Function Code 05) .................................................................. 150
5.5.7 Preset Single Register (Function Code 06) .......................................................... 151
5.5.8 Read Exception Status (Function Code 07) ......................................................... 152
5.5.9 Diagnostics (Function Code 08) ........................................................................... 152