Analog from SLC-500 remote rack to PLC5 main rack

[matt.norsask]

My goal is to get an analog signal from a SLC-500 remote rack back to a PLC-5 main rack. Is this possible? If so, I may need some help. I've set up a BTW and BTR, but I can't seem to get any readings from the NI4 analog input card. Any ideas?

 

[JesperMP]

Is the remote SLC500 rack, with an SLC500 CPU, or a rack with RIO or Devicenet adapter ?

 

[matt.norsask]

The remote SLC500 rack has an RIO adapter

 

[JesperMP]

Look in chapter 3 in this manual:
http://literature.rockwellautomation.com/idc/groups/literature/documents/um/1747-um006_-en-p.pdf

The NI4 card can be addressed directly (without block transfers) if ½-slot addressing is used.
However, this is probably wastes address spaces, so block transfers is the way to go.
If you have already set this up, then provide more detailed information.

 

[matt.norsask]

Thanks for the help, Jesper! The manual pointed me in the right direction. My issue ended up being in the dip switches on the 1746-ASB module. The image size was set to 4, and since the NI4 card was the 5th, the adapter didn't realize it was there. Simple fix for someone experienced, I'm sure. The rack was already in 1 slot addressing, so I used a BTW and BTR pair to make the card communicate. Thanks again!