ProSoft Technology MVI56E-MNETCR - Manual (Page 99)

MVI56E-MNETCR ♦ ControlLogix Platform Reference
Modbus TCP/IP Multi Client Enhanced Communications Module for Remote Chassis User Manual
ProSoft Technology, Inc. Page 99 of 159
June 14, 2011
Data contained in this database is paged through the input and output images by
coordination of the ControlLogix ladder logic and the MVI56E-MNETCR module's
program. Up to 40 words of data can be transferred from the module to the
processor at a time. Up to 40 words of data can be transferred from the
processor to the module. Each image has a defined structure depending on the
data content and the function of the data transfer. The module uses the following
block numbers:
Block Range Descriptions
-1 Null block
0 Null block
1 to 125 Read or write data
1000 to 1124 Output Initialization Blocks
2000 to 2029 Event Command Block (page 103)
3000 to 3029 Client status request/response blocks (page 105)
5001 to 5016 Command Control (page 106, page 102)
9990 Set new module IP address (page 107)
9991 Get module IP address
9998 Warm-boot control block (page 109)
9999 Cold-boot control block
These block identification codes can be broken down into a few groups: Normal
data transfer blocks (-1 to 125), Initialization blocks (1000 to 1124), and
Command control blocks (2000, 5000 to 5016, 9998 and 9999).