Internal Bit addressing on the CPM1A / Omron PLC's

If anyone can assist me in my folly I would surely appreciate it. I am creating a program for a small control panel and find that I can't get any work bit addresses. I've read this manual and it is not helping me any. Can someone please help me out? Thank you......

In CPM1A the intenal bit, also called as work bits (IR Area) is from IR20000 to IR23115 (i.e.word IR200 to IR231)

In each word you can use from bit 0 to bit 15

so in word 200 the bits would be
20000
20001
20002
20003
20004
20005
20006
20007
20008
20009
20010
20011
20012
20013
20014
20015

If you want to hold the status of bits after power off you have to use the HR area bits. It starts from HR0000 to HR1915 (word HR00 to HR19). Ensure you use the set/reset or Keep instruction to do latching to keep the status.

Thanks, Chavak, I couldn't have said it better. Also, since you only have one PLC, the LR(Link Relays) can be used as work bits.

You guy's are a great help! Thanks a lot for the information you've given. Jay where did you find that page? I've searched all over for that stuff and could not find it anywhere.


Again Thanks,

John

Link to the Manual:
CPM1A Programming Manual