I am doing a PLC5 to Controllogix upgrade (not using conversion software)
I hooked up the 1756-DHRIO card to the existing (and working) Remote I/O and everything came in perfect except the FlexI/O analog cards, and the first half of Rack 5 which is the second half of Chassis 3.
The issue with the first half of rack 5 may be that there are no cards to read?
I read the manual for the 1756-DHRIO and followed the outline for reading the Flex I/O and there is no mention of BTW's but I have seen posts where BTW should be used.
In the old PLC5 program the BTW's and BTR's for the analog modules are in Ladder 3 Rungs 11 through 15.
I recreated them in the Controllogix program "Messaging" Routine Rungs 20 and 21 but the BTR's are going into error for no connection.
The old PLC5 is still in operation, I just unplugged the RIO temporarily during some downtime
If anyone could shed some light on why the analog is not coming in that would be great....
Plus any critiques on the new program (positive or negative) would be appreciated...
Thanks