AB 1785-V40L VME, Test the Local port

[sifis]

I have a 1785-V40L on hand.How do I test the local port for functionality?

 

[Chance85]

Do you think there may be a problem with the port or do you just want to test it?

 

[sifis]

I want to test the port to make sure that it is OK.Thank you,sifis.

 

[Ken Roach]

You have to hook it up to a chassis equipped with a 1771-ALX Local I/O Adapter and see if it works.

There's no "loopback" or other test mechanism for the PLC-5 Local I/O bus except actually connecting to an adapter.

 

[sifis]

Thank you.

 

[sifis]

What is the cable part no. between the 1785-V40L and the 1771-ALX?

 

[Chance85]

You may want to verify but I beleive these are the numbers.

1771-CX1 = 1m
1771-CX2 = 2m
1771-CX5 = 5m

There's probably a pin out for these somewhere. I dont have time to look right now.

 

[Chance85]

Scratch what I said about the pin out, I thought you might be able to make your own. I was thinking about channel 0. It looks like you will need the cable and the terminator (1771-CXT)from A.B. Kinda pricy though.