RIO Problem SLC5/03 to 1794-ASB

Sorry to bother everyone but I'm having real problems.
The setup is:
SLC5/03 with a 1747-ASB series B in slot 1.
1794-ASB series E in the field with 6 X 1794-OW8's in the rack.
The dip switches in the 1794-ASB are all set to ON.
The advanced config for the 1747-ASB is:
Scanned input and output words = 32.
M0 and M1 lengths = 3300.
G file length = 3.
G Data:
Logical Rack 0, Group 0, 3/4 Rack.
Diagnostics:
1747-ASB Comms flashing red, Fault no indication.
1794-ASB Power Green, Active flashing green, Adapter Fault no indication,
Local Fault no indication.
When I unplug the comms on the 1794-ASB the Active has no indication.
I have tested the cable and can read the opposing 150ohm resistor from either end, no grounds.
I have checked the plug on the 1794-ASB and all the pins are fine.
According to the 1794-ASB manual the module is in Program or Test mode.
What do they mean ?

Thanks in advance,
Barry

Did it work in the past, or are you commissioning these components for the first time ?

It is supposed to have worked. I installed it around 12 years ago and it worked then but somebody may have played with it. It has been idle for the last 3 years at least.

1747-ASB red fault light solid - Major fault (see attached)

1794-ASB flashing green - thinks PLC in program or test mode, so not communicating with 1794-ASB, probably a consequence of the major fault in the 1747-ASB....

Have you a spare 1747-ASB?

The 1747-ASB Fault led is off.
The 1747-ASB Comms led is flashing red.

OK, misread your original post...

here is the rest of the trouble shooting info.

Thanks for that.
Strange, but my 1747-ASB module does not have a display.

bazzab1 said:

Thanks for that.
Strange, but my 1747-ASB module does not have a display.

Click to expand...

Is it the 1747-SN ( Remote I/O scanner)

See chapter 6 for troubleshooting.

http://columbiamachine.com/docs/knowledge-base/PLC_1747-SN_User Manual.pdf

The Scanner module that goes in the chassis with the SLC CPU is a 1747-SN.

The 1747-ASB goes into its own chassis as an adapter; you don't have one of those.

Unfortunately the 1747-SN doesn't have a whole lot in the way of diagnostics features, just that one LED indicating there's a network problem.

Sorry, you are right, It's a 1747-SN.

Modified setup

The setup is:
SLC5/03 with a 1747-SN series B in slot 1.
1794-ASB series E in the field with 6 X 1794-OW8's in the rack.
The dip switches in the 1794-ASB are all set to ON.
The advanced config for the 1747-SN is:
Scanned input and output words = 32.
M0 and M1 lengths = 3300.
G file length = 3.
G Data:
Logical Rack 0, Group 0, 3/4 Rack.
Diagnostics:
1747-SN Comms flashing red, Fault no indication.
1794-ASB Power Green, Active flashing green, Adapter Fault no indication,
Local Fault no indication.
When I unplug the comms on the 1794-ASB the Active has no indication.
I have tested the cable and can read the opposing 150ohm resistor from either end, no grounds.
I have checked the plug on the 1794-ASB and all the pins are fine.
According to the 1794-ASB manual the module is in Program or Test mode.
What do they mean ?

Can someone check the 1794-ASB dipswitch configuration and the 1747-SN configuration for me please ?

Bump, Can anyone help me with this ?

the troubleshooting manual for the 1747-SN says that the error code is here:

Word 6 of the SLC processor status file contains this code. Refer to your programming device’s user manual.

Click to expand...

so............what is your error code?

Unfortunately the Comm LED flashing red does not generate error indications to the SLC processor, according to the manual. Thanks for your reply. Can you check my config and G data for the SN and the dipswitch settings for the ASB ?

OK, I got it working. The problem was that the last 2 modules in the rack were dead. Strange that the ASB did not come up with some sort of local fault ?