Processor back to factory default

I would like to return a SLC 500 5/04 back to factory default. I believe I have to remove the processor from the back-plane and jumper between GND and VBB.

Is this correct?

Thanks

rmonroe

Yes, thats correct.

A couple more reminders

• Power down the rack before unplugging the processor and leave it powered down until after you reinsert the processor.
• Unplug the processor battery BEFORE shorting the VBB pin to ground.

Also remove the memory module if it has one before powering back up.

My over all goal is to communicate using the USB (DF1) converter. I wanted to set the processor back to factory default before trying. I'm using SLC 5/04 processor and the 1747 UIC driver for RSLinks.

Using the RS232 (DH485) port on the USB converter (COM Port4) and the switch in the right postion I am not able to communicate with the PLC. But if I go directly from my PC Com port (re-configured port com1) to the PLC I have no issues.

I then switched processor (SLC 5/03) and using now the RS485 (DH485) port on the converter (com port4) I am able to estabish communication.

I'm not sure what my problem is...maybe I need some help?

Thanks for your support

rmonroe

The 1747 UIC is exclusively for DH485 communications - despite the fact that it has a 9-pin D connector on it. This has caused considerable confusion among people. The 9 pin D connector is used for communicating with PLCs on which Channle 0 has been re-configured to talk using the DH485 protocol.

If you are using the default DF1 protocol, you need to use a standard USB-RS232 converter (I use a Keyspan converter when I need one) or your computers RS232 port to connect to channel 0 of the PLC.

Save the UIC for talking to SLC5/01 and SLC5/02 PLCs.