Plc5

Gandalfrw101

Member
Join Date
Mar 2014
Location
wisconsin
Posts
13
I am working with a PLC5 in am 8 slot rack. 1771-A2B, in 1 slot addressing mode.
Rack configuration is:
Slot, R/G/S/C, Module Type, I.O/Point, Description
0 0/0/0/0 1771-IAD 16 120V ac 16PT INPUT
1 0/1/0/0 1771- OAD 16 120V AV 16PT OUTPUT
2 0/2/0/0 1771-IAD 16 120V ac 16PT INPUT
3 0/3/0/0 1771-IAD 16 120V ac 16PT INPUT
4 0/4/0/0 1771- OAD 16 120V AV 16PT OUTPUT
5 0/5/0/0 EMPTY SLOT
6 0/6/0/0 1771- IFE 16 12 BIT ANALOG INPUT (OR IFE/A
7 0/6/0/0 1771- IFE 4 12 BIT ANALOG OUTPUT



In the program I'm working on there are several references to inputs or outputs labeled I:050/7 or O:044/10. if the addressing is rack/group/slot with the group referring to the slot, in 1 slot addressing mode. What does the 44, or 50 refer to?
 
Which model of PLC-5 do you have? Most of them have a Remote I/O scanner port and can be connected to remote 1771 chassis and other devices on the old Allen-Bradley Universal Remote I/O network.

Rack numbers can go up to 77 (octal) but PLC-5 controllers typically supported 4, 8, 16, or 24 logical racks.
 
Hi

I would go along with ken.
If you check the front of the processor is there a blue cable or cables connected to a 3 pin connection. Just remember it may be another plc 5 rack, panel view, drive, flex I/o etc

Donnchadh
 
Which model of PLC-5 do you have? Most of them have a Remote I/O scanner port and can be connected to remote 1771 chassis and other devices on the old Allen-Bradley Universal Remote I/O network.

Rack numbers can go up to 77 (octal) but PLC-5 controllers typically supported 4, 8, 16, or 24 logical racks.

Thanks for the confirmation, clearly the engineering has not told me th hole story and I haven't seen the plant yet.
 

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