GFK-1504K
Chapter 13 Mixed Discrete/High-speed Counter Module
13-23
13
IC200MDD841
Mixed Module, 24VDC Positive Logic Input 20 Points / Output 12 Point /
(4) High Speed Counter, PWM, or Pulse Train Configurable Points
Data Commands
Temporary operating changes can be made using Data Commands. Data Commands can
be sent to the module as part of its analog (AQ) data. A VersaMax PLC CPU can also send
Data Commands using the COMREQ function.
Data Command Formats
A Data Command uses 3 words of memory. The contents of these 3 words are:
MSB
LSB
command word
data word (LSW)
where: n=counter 1-4
cc=subcommand code
dd=data type
0n
cc
dd
dd
dd
dd
data word (MSW)
In the total analog output (AQ) data used by the module, there is room for 4 of these data
commands, which are arranged as follows:
Output Words 9-11
Command 1
Output Words 12-14
Command 2
Output Words 15-17
Command 3
Output Words 18-20
Command 4
There is no limit to the length of time a command can be present in the output words. The
module acts on a command only when it detects a change in the command words.
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