ProSoft Technology MVI56-LTQ User Manual
Page 63
MVI56-LTQ ♦ ControlLogix Platform
Reference
Limitorque Valve Actuator Master Communication Module
User Manual
ProSoft Technology, Inc.
Page 63 of 98
August 30, 2010
The following table lists the relationship between the word/bit combination and
the slave index in the module:
The module status data starts at word 212 in the read block. This information can
be used to determine the "health" of the module and should be moved to the
status object in the processor logic.
The Write Block ID associated with the block requests data from the ControlLogix
processor. Under normal program operation, the module sequentially sends read
blocks and requests write blocks. For example, if eight read and two write blocks
are used with the application, the sequence will be as follows:
R0W0
R1W1R2W0R3W1R4W0R5W1R6W0R7W1R0W0
This sequence will continue until interrupted by other write block numbers sent by
the controller or by operator control through the module’s Configuration/Debug
port.