ProSoft Technology MVI46-MCM - Manual (Page 64)

Reference MVI46-MCM ♦ SLC Platform
User Manual Modbus Communication Module
Page 64 of 108 ProSoft Technology, Inc.
March 29, 2011
5.2.3 Normal Data Transfer
This version of the module provides for direct access to the data in the module.
All data related to the module is stored in the module’s M1 file. To read data from
the module, use the COP instruction to copy data from the module’s M1 file to a
user data file. To write data to the module, use the COP instruction to copy data
from a user file to the module’s M1 file. Registers 0 to 4999 should be used for
user data. All other registers are reserved for other module functions.
5.2.4 Special Function Blocks
Special Function blocks are special blocks used to control the module or request
special data from the module. The current version of the software supports the
following special function blocks:
 Event Command blocks
 Slave Status blocks
 Command
Control blocks
 Write Configuration block
 Warm
Boot block
 Cold Boot block