User Data Objects - ProSoft Technology inRAx MVI56-CAS User Manual

Installing and Configuring the Module
Status Object (CASInStat)
This object views the status of the module. The CASInStat object shown below
is updated each time a read block is received by the processor. Use this data to
monitor the state of the module at a "real-time rate".
Refer to the Reference chapter for a complete listing of the data stored in this
object.

2.1.4 User Data Objects

These objects hold data to be transferred between the processor and the MVI56-
CAS module. The user data is the read and write data transferred between the
processor and the module as "pages" of data up to 200 words long.
The read data (ReadData) is an array set to match the value entered in the
ReadRegCnt parameter of the CASModule object. For ease of use, this array
should be dimensioned as an even increment of 200 words. This data is paged
up to 200 words at a time from the module to the processor. The ReadData task
is responsible for placing the data received into the proper position in the read
data array. Use this data for status and control in the ladder logic of the
processor.
ProSoft Technology, Inc.
December 26, 2007
MVI56-CAS ♦ ControlLogix Platform
Teledyne CA Slave Module
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