adccommunitymod (AutomationDirect) asked a question.
Created Date: February 22,2010
Created By: duwop
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I 've been thinking about getting a few Click PLC 'c so I downloaded the software to give it a go. I am planning on connecting them to radios as modbus slaves. The Modbus master (which is a different brand) polls the modbus slaves. The Modbus master reads 63 Integers (words) of data & writes 12 Integers (words) of data. Some of the words need to be accessed at the bit level. I didn't see a clear way to do this in the Click. The only way that I seen is to for example: DS64 & DS65 needs to be accessed at the bit level (Both are part of the write data from the modbus master.) Block Copy DS64-DS65 to DH64-DH65 then, Unpack Copy DH64 to c101-c116 & Unpack Copy DH65 to c121-c136. Did I miss something or is this the way that I need to do this in the Click PLC???? Is there an easier way?
Created Date: February 22,2010
Created by: milldrone
Did I miss something or is this the way that I need to do this in the Click PLC????
Is there an easier way?
What you are doing is the only way I have found, (yet) to access bits from words.
Created Date: February 22,2010
Created by: duwop
I 've been thinking about getting a few Click PLC 'c so I downloaded the software to give it a go. I am planning on connecting them to radios as modbus slaves. The Modbus master (which is a different brand) polls the modbus slaves. The Modbus master reads 63 Integers (words) of data & writes 12 Integers (words) of data. Some of the words need to be accessed at the bit level. I didn't see a clear way to do this in the Click. The only way that I seen is to for example:
DS64 & DS65 needs to be accessed at the bit level
(Both are part of the write data from the modbus master.)
Block Copy DS64-DS65 to DH64-DH65 then,
Unpack Copy DH64 to c101-c116 &
Unpack Copy DH65 to c121-c136.
Did I miss something or is this the way that I need to do this in the Click PLC????
Is there an easier way?