ProSoft Technology MVI46-MCM - Manual (Page 70)

Reference MVI46-MCM ♦ SLC Platform
User Manual Modbus Communication Module
Page 70 of 108 ProSoft Technology, Inc.
March 29, 2011
Configuration Data Transfer
When the module performs a restart operation, it will request configuration
information from the SLC processor. This data is transferred to the module in a
specially formatted write block in the M0 file. The module will poll for this
information by placing the value 9000 in word 0 of the M0 file. The ladder logic
must construct the requested block in order to configure the module. Refer to
Module Data (page 28) for a description of the data objects used with the blocks
and the ladder logic required. The format of the block for configuration is given in
the following section.
Module Configuration Data (9001)
This block sends configuration information from the processor to the module. The
data is transferred in a block with an identification code of 9001.
Configuration Block from Processor to Module
M0 Offset Description Length
0 9001 1
1 to 6 Backplane Setup 6
11 to 40 Port 1 Configuration 30
41 to 70 Port 2 Configuration 30
71 to 80 Port 1 Command # 0 Definition 10
81 to 90 Port 1 Command # 1 Definition 10
91 to 1060 Port 1 Command # 2 to # 98 980
1061 to 1070 Port 1 Command # 99 Definition 10
1071 to 1080 Port 2 Command # 0 Definition 10
1081 to 1090 Port 2 Command # 1 Definition 10
1091 to 2060 Port 2 Command # 2 to # 98 980
2061 to 2070 Port 2 Command # 99 Definition 10
If there are any errors in the configuration, the bit associated with the error will be
set in one of the two configuration error words. The error must be corrected
before the module starts operating.