ProSoft Technology MVI69E-MBS - Manual (Page 6)

Contents MVI69E-MBS ♦ CompactLogix Platform
User Manual Communication Module
Page 6 of 162 ProSoft Technology, Inc.
January 6, 2014
4.3.1 Write Block: Request from the Processor to the Module ........................................ 72
4.3.2 Read Block: Response from the Module to the Processor ..................................... 72
4.3.3 Read and Write Block Transfer Sequences ........................................................... 73
4.3.4 If Block Transfer Size = 60 ..................................................................................... 74
4.3.5 If Block Transfer Size = 120 ................................................................................... 74
4.3.6 If Block Transfer Size = 240 ................................................................................... 75
4.4 Data Flow Between the Module and Processor ..................................................... 75
4.4.1 Slave Mode ............................................................................................................. 76
4.4.2 Master Mode ........................................................................................................... 78
5 Using Controller Tags 81
5.1 Controller Tags ....................................................................................................... 82
5.1.1 MVI69E-MBS Controller Tags ................................................................................ 82
5.2 User-Defined Data Types (UDTs)........................................................................... 84
5.2.1 MVI69E-MBS User-Defined Data Types ................................................................ 84
5.3 MBS Controller Tag Overview ................................................................................ 87
5.3.1 MBS.CONFIG ......................................................................................................... 87
5.3.2 MBS.DATA .............................................................................................................. 88
5.3.3 MBS.CONTROL...................................................................................................... 88
5.3.4 MBS.STATUS ......................................................................................................... 92
5.3.5 MBS.UTIL ............................................................................................................... 93
6 Diagnostics and Troubleshooting 95
6.1 Ethernet LED Indicators .......................................................................................... 96
6.2 LED Status Indicators ............................................................................................. 96
6.2.2 Troubleshooting the LEDs ...................................................................................... 98
6.3 Connecting the PC to the Module's Ethernet Port .................................................. 99
6.3.1 Setting Up a Temporary IP Address ....................................................................... 99
6.4 Using the Diagnostics Menu in ProSoft Configuration Builder ............................. 102
6.4.1 Diagnostics Menu ................................................................................................. 104
6.4.2 Monitoring General Information ............................................................................ 104
6.4.3 Monitoring Network Configuration Information ..................................................... 105
6.4.4 Monitoring Backplane Information ........................................................................ 105
6.4.5 Port x Module Information ..................................................................................... 105
6.4.6 Monitoring Data Values in the Module’s Database............................................... 106
6.5 Communication Error Codes ................................................................................ 107
6.6 Connecting to t he Module’s Webpage .................................................................. 108
7 Reference 111
7.1 Product Specifications .......................................................................................... 112
7.1.1 General Specifications - Modbus Master/Slave .................................................... 112
7.1.2 Hardware Specifications ....................................................................................... 113
7.2 About the Modbus Protocol .................................................................................. 114
7.2.1 Function Codes Supported by the Module ........................................................... 115
7.2.2 Read Coil Status (Function Code 01) ................................................................... 115
7.2.3 Read Input Status (Function Code 02) ................................................................. 116
7.2.4 Read Holding Registers (Function Code 03) ........................................................ 117
7.2.5 Read Input Registers (Function Code 04) ............................................................ 118
7.2.6 Force Single Coil (Function Code 05) .................................................................. 119
7.2.7 Preset Single Register (Function Code 06) .......................................................... 120