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Got a word containing a decimal number which refers to some modbus registers on another plc.
I'm aware I can use unpack for the first 8 byte, but what about those comming after?
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I recently needed to do something similar to what you are doing now. I checked the Oscat libraries, but ended up writing my own FB. However, I was shifting an array, not a register. You will most likely need to write your own function block using either BSR/BSL or the rotate command (ROL and another one, I think).
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somlioy hat geschrieben:
Hello
Got a word containing a decimal number which refers to some modbus registers on another plc.
I'm aware I can use unpack for the first 8 byte, but what about those comming after?
Assign the word to a memory location such as %MW0.
MYWORD at %MW0:WORD;
Then assign variable names to each bit within %MW0.
MYWORD_BIT_00 at %MX0.0:Bool;
MYWORD_BIT_01 at %MX0.1:Bool;
etc.
Then each bit of your word is accessible and visible.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Hello
Got a word containing a decimal number which refers to some modbus registers on another plc.
I'm aware I can use unpack for the first 8 byte, but what about those comming after?
check oscat.de for a nice bundle of functions.
I recently needed to do something similar to what you are doing now. I checked the Oscat libraries, but ended up writing my own FB. However, I was shifting an array, not a register. You will most likely need to write your own function block using either BSR/BSL or the rotate command (ROL and another one, I think).
probably you mean bits instead of bytes.
you can use a word breaker (makes 2 bytes out of it, or you can use the wordvariable.0 etc.
Assign the word to a memory location such as %MW0.
MYWORD at %MW0:WORD;
Then assign variable names to each bit within %MW0.
MYWORD_BIT_00 at %MX0.0:Bool;
MYWORD_BIT_01 at %MX0.1:Bool;
etc.
Then each bit of your word is accessible and visible.