
Ladder Logic MVI56E-SIE ♦ ControlLogix Platform
User Manual Client Communication Module
Page 112 of 168 ProSoft Technology, Inc.
September 6, 2012
3.4.4 SIE.UTIL
This controller tag structure stores the variables required for the data transfer
between the processor and the MVI56E-SIE module.
Index of last write block
Computed block offset for data table
Computed block offset for status data
Gets ReadData array length
Gets WriteData array length
Holds the value of the block counts of the
ReadData array
Holds the value of the block counts of the
WriteData array
Holds remainder calculation value from the
read array
Holds remainder calculation value from the
write array
Allows setting module IP address
Allows getting module IP address
Used to bring the module into a known state
after a restart operation
Check initialization trigger
The LastRead tag stores the latest Read Block ID received from the module. The
LastWrite tag stores the latest Write Block ID to be sent to the module. The
BlockIndex tag is an intermediate variable used during the block calculation.
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