ProSoft MVI69E-MBS - Page 6

Contents MVI69E-MBS ♦ CompactLogix Platform
User Manual Modbus Serial Enhanced Communication Module
Page 6 of 154 ProSoft Technology, Inc.
June 28, 2017
4.3.2 Read Block: Response from the Module to the Processor ..................................... 65
4.3.3 Read and Write Block Transfer Sequences ........................................................... 66
4.4 Data Flow Between the Module and Processor ..................................................... 70
4.4.1 Slave Mode ............................................................................................................. 70
4.4.2 Master Mode ........................................................................................................... 72
5 Using Controller Tags 75
5.1 Controller Tags ....................................................................................................... 75
5.1.1 MVI69E-MBS Controller Tags ................................................................................ 76
5.2 User-Defined Data Types (UDTs)........................................................................... 77
5.2.1 MVI69E-MBS User-Defined Data Types ................................................................ 77
5.3 MBS Controller Tag Overview ................................................................................ 79
5.3.1 MBS.CONFIG ......................................................................................................... 80
5.3.2 MBS.DATA .............................................................................................................. 80
5.3.3 MBS.CONTROL...................................................................................................... 80
5.3.4 MBS.STATUS ......................................................................................................... 85
5.3.5 MBS.UTIL ............................................................................................................... 86
6 Diagnostics and Troubleshooting 87
6.1 Ethernet LED Indicators .......................................................................................... 88
6.2 LED Status Indicators ............................................................................................. 88
6.2.1 Clearing a Fault Condition ...................................................................................... 89
6.2.2 Troubleshooting ...................................................................................................... 89
6.3 Connecting the PC to the Module's Ethernet Port .................................................. 90
6.3.1 Setting Up a Temporary IP Address ....................................................................... 90
6.4 Using the Diagnostics Menu in PCB ....................................................................... 93
6.4.1 Diagnostics Menu ................................................................................................... 95
6.4.2 Monitoring Network Configuration Information ....................................................... 96
6.4.3 Monitoring Backplane Information .......................................................................... 97
6.4.4 Port x Module Information ....................................................................................... 98
6.4.5 Monitoring Data Values in the Module’s Database................................................. 99
6.5 Communication Error Codes ................................................................................ 100
6.5.1 Standard MODBUS Protocol Exception Code Errors ........................................... 100
6.5.2 Module Communication Error Codes ................................................................... 100
6.5.3 Command List Entry Errors .................................................................................. 100
6.6 Connecting to the Module’s Web Page ................................................................ 101
7 Reference 103
7.1 Product Specifications .......................................................................................... 103
7.1.1 Hardware Specifications ....................................................................................... 104
7.1.2 General Specifications - Modbus Master/Slave .................................................... 104
7.2 About the Modbus Protocol .................................................................................. 105
7.2.1 Modbus Master ..................................................................................................... 105
7.2.2 Modbus Slave ....................................................................................................... 105
7.2.3 Function Codes Supported by the Module ........................................................... 106
7.2.4 Read Coil Status (Function Code 01) ................................................................... 106
7.2.5 Read Input Status (Function Code 02) ................................................................. 107
7.2.6 Read Holding Registers (Function Code 03) ........................................................ 109
7.2.7 Read Input Registers (Function Code 04) ............................................................ 110
7.2.8 Force Single Coil (Function Code 05) .................................................................. 111