ProSoft Technology MVI56E-MNET/MNETXT - Manual (Page 112)

Reference MVI56E-MNET / MNETXT ♦ ControlLogix Platform
User Manual Modbus TCP/IP Interface Module
Page 112 of 181 ProSoft Technology, Inc.
April 23, 2014
These block identification codes can be broken down into two groups:
Normal data transfer blocks
 Read and Write blocks (-1 to 25)
Special function blocks
 Initialize Output Data blocks (1000 to 1024)
 Event Command block (2000)
 Command Control blocks (5001 to 5006)
 Pass-through blocks (9956 to 9961, 9970 and 9996)
 Module IP Address blocks (9990 and 9991)
 Warm-boot and Cold-boot blocks (9998 and 9999)