
Contents MVI56E-MNETR ♦ ControlLogix Platform
User Manual Modbus TCP/IP Interface Module with Reduced Data Block
Page 6 of 175 ProSoft Technology, Inc.
June 14, 2011
3 Ladder Logic 79
3.1 MNETRMODULEDEF ............................................................................................ 80
3.1.1 MNETRDATA.......................................................................................................... 81
3.1.2 MNETRSTATUS..................................................................................................... 82
3.1.3 MNETRCONTROL ................................................................................................. 84
3.1.4 MNETRUTIL ........................................................................................................... 87
3.2 Modbus Message Data........................................................................................... 89
4 Diagnostics and Troubleshooting 91
4.1 Reading Status Data from the Module ................................................................... 92
4.2 The Diagnostics Menu ............................................................................................ 93
4.2.1 Using the Diagnostics Menu in ProSoft Configuration Builder ............................... 93
4.3 Monitoring Module Information ............................................................................... 97
4.3.1 Version.................................................................................................................... 97
4.3.2 Config...................................................................................................................... 97
4.3.3 NIC Status............................................................................................................... 97
4.3.4 Static ARP............................................................................................................... 97
4.4 Monitoring Backplane Information .......................................................................... 97
4.4.1 Backplane Status .................................................................................................... 98
4.5 Monitoring Database Information............................................................................ 99
4.6 Monitoring MNET Client Information..................................................................... 100
4.6.1 Command List....................................................................................................... 100
4.6.2 Command Status .................................................................................................. 100
4.6.3 Config.................................................................................................................... 100
4.6.4 Status.................................................................................................................... 100
4.7 Monitoring MNET Server Information ................................................................... 101
4.7.1 Config.................................................................................................................... 101
4.7.2 Status.................................................................................................................... 101
4.8 LED Status Indicators ........................................................................................... 102
4.8.1 Scrolling LED Status Indicators ............................................................................ 102
4.8.2 Ethernet LED Indicators........................................................................................ 103
4.8.3 Non-Scrolling LED Status Indicators .................................................................... 104
4.9 Client Configuration Error Word............................................................................ 105
4.10 Clearing a Fault Condition .................................................................................... 106
4.11 Troubleshooting .................................................................................................... 107
5 Reference 109
5.1 Product Specifications .......................................................................................... 110
5.1.1 General Specifications.......................................................................................... 110
5.1.2 Functional Specifications ...................................................................................... 111
5.1.3 Hardware Specifications ....................................................................................... 111
5.2 Functional Overview ............................................................................................. 112
5.2.1 About the MODBUS TCP/IP Protocol................................................................... 112
5.2.2 Module Power Up ................................................................................................. 112
5.2.3 Backplane Data Transfer ...................................................................................... 113
5.2.4 Data Flow between MVI56E-MNETR Module and ControlLogix Processor......... 125
5.3 Ethernet Cable Specifications............................................................................... 130
5.3.1 Ethernet Cable Configuration ............................................................................... 130
5.3.2 Ethernet Performance........................................................................................... 130
5.4 Status Data Definition ........................................................................................... 131