ProSoft Technology MVI56E-MCM/MCMXT User Manual
Page 127

MVI56E-MCM ♦ ControlLogix Platform
Reference
Modbus Communication Module
User Manual
ProSoft Technology, Inc.
Page 127 of 199
June 18, 2014
Module Configuration Block (9000)
On boot-up, the module sends a request for configuration information to the
processor. The request block has a Block ID of 9000.
Block Request from Module to Processor
Word Offset
Description
Length
0
Reserved
1
1
9000
1
2 to 248
Spare
247
249
9000
1
The processor responds by sending a block with general configuration
information to the module.
Configuration Block from Processor to Module
Word Offset
Description
Length
0
9000
1
1 to 6
Backplane Setup
6
7 to 31
Port 1 Configuration
25
32 to 56
Port 2 Configuration
25
57 to 59
Port 1 Aux. Configuration
3
60 to 62
Port 2 Aux. Configuration
3
63 to 247
Spare
185
If the configuration information is valid, the module commences normal data
transfer operation. If there are errors in the configuration, the module sends the
processor a read block with configuration error codes.
Block Response from Module to Processor
Word Offset
Description
Length
0
Reserved
1
1
9000
1
2
Module Configuration Error Code
1
3
Port 1 Configuration Error Code
1
4
Port 2 Configuration Error Code
1
5 to 248
Spare
244
249
-2 or -3
1
Any errors must be corrected before the module will start operating.