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from the "Two holes in the wall" department...
Addressing a Modicon J890
  | Posted by Per Abrahamsson  on 9 October, 2012 - 5:49 am |
Hello,
A customer has a few Modicon Remote-I/O modules of type J890, and we are not fully sure how to set a J890 to the corresponding drop number on the RIO network. The drop number is set via a DIP switch. We guess that the number is to be set binarily. That means, e.g., flipping up first and third switch lever makes a value of 5. Should - in addition - a 1 be added to the binary value (making 1 and 3 up rather 6 than 5)?
A customer has a few Modicon Remote-I/O modules of type J890, and we are not fully sure how to set a J890 to the corresponding drop number on the RIO network. The drop number is set via a DIP switch. We guess that the number is to be set binarily. That means, e.g., flipping up first and third switch lever makes a value of 5. Should - in addition - a 1 be added to the binary value (making 1 and 3 up rather 6 than 5)?
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From what I could find, the sws for addressing set the addressing starting at "1" with all switches OFF (original Modicon addressing always started at "1", "0" was not a valid starting address).
Address switchpack only uses sws 1 -5 (6/7/8 not used). Other switchpack is for ASCII settings.
All sws off = 1, all sws on = 32
Address switchpack only uses sws 1 -5 (6/7/8 not used). Other switchpack is for ASCII settings.
All sws off = 1, all sws on = 32
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