Hey everyone, finally got around to installing this in the field, I ran into the same problem with my rack 1 and remembered to change it to a half rack and that fixed the problem. However, my rack 3 is not scanning, and I can't quite figure out how to get it talking. Every other rack is scanning, just for reference (I also had to change rack 6 to a half rack to get it to scan, but I'm not sure if that really mattered because there are no I/O cards in it).
As a reminder, my physical chassis layout is as follows, program I/O tree is above:
CHASSIS 1 (12 slot) - this is the chassis in the picture I attached above, existing PLC-5 processor in this rack
Rack 0 - 8 slots (0-7) single slot addressing
Rack 1 - 4 slots (8-11/10-13 octal) single slot addressing, no cards whatsoever in this rack
RIO from PLC-5 processor in chassis 1 to ASB module in chassis 2
CHASSIS 2 (12 slot) - ASB module in this rack
Rack 2 - 8 slots (0-7) single slot addressing
Rack 3 (1 of 2) - 4 slots (8-11/10-13 octal) single slot addressing, also no cards in this rack - Rack 3 is configured as a full rack, continued in the next chassis
RIO paralleled from the ASB in this chassis to chassis 4
CHASSIS 3 (12 slot) - ASB module in this rack
Rack 3 (2 of 2) - 4 slots (0-3) single slot addressing
Rack 4 - 8 slots (4-11) single slot addressing
RIO from the ASB in this chassis to chassis 4
CHASSIS 4 (12 slot) - ASB module in this rack
Rack 5 - 8 slots (0-7) single slot addressing
Rack 6 - 4 slots (7-11/10-13 octal) single slot addressing
RIO paralleled from the ASB in this chassis to chassis 3
I'm not sure exactly what's causing the issue, unsure if it's the fact that rack 3 begins on chassis 2 and continues on chassis 3? The ASB DIP switches on the adapter with the second half of rack 3 are assigned for rack 3, starting I/O group is 4. However, no matter how I try to configure my rack in my I/O tree it either doesn't work or won't allow me to change the I/O configuration because of an incorrect rack size or that there are modules in the module groups it's trying to eliminate. I've tried changing the rack size to 1/2 rack with a starting I/O group of 4, but it says the RIO rack size is too large for the current starting group.
The DIP switches on the ASB module with rack 3 module groups 4-7 are as follows:
SW1
1 - ON
2 - ON
3 - ON
4 - ON
5 - OFF
6 - OFF - First 6 set rack number to 3
7 - OFF
8 - ON - 7/8 set for starting I/O group of 4
SW1
1 - ON - 57.6k baud
2 - ALWAYS OFF
3 - ALWAYS OFF
4 - ALWAYS OFF
This chassis does have a 150 Ohm resistor across the RIO cable because it is physically the last chassis, so I don't think that's the issue, but I'm not positive. Any insights would be much appreciated.