BooCrew

Referring to Comms/System Comms   ?

First of all before I forget.............. Thank you all for your support.....   NO flashing, then the DB-9 port is (probably) set for “DF1 Full Duplex” and you’ll (probably) need the “RS-232/DF1” driver in RSLinx."   Currently working on the above approach for I do not have a flashing light as suggested.  So far no results but still working on it.

Maybe I am missing the suggestion?   ... Download has happened... unit is now working but I seem to be Locked out by lack of connection threw linx.

Fault Code = 001h was the original  blinking light.

I am troubleshooting a communications error problem.   I responded to a blinking fault light on my SLC 500 1747-l532 Series D Processor unit.  After much deliberation drew the conclusion that the program was screwed up.  Thankfully I had a backup copy on lap top made few years ago for just such an occasion.     I created a driver setup with rslinx Classic: DH485 Sta:0 COM1 Comm Port    COM1 Device SLC-CH0/Micro/Panelview Baud 1200 Station 00 Parity   NONE Error Checking NONE Stop Bits   1 Protocol FULL DUPLEX Communications with the PC from lap top was good and a successful download of the backup program happened and the SLC 500 is now online and back in control of the assembly line.   My current issue is during the download there was a popup that said something to the effect “If I choose to continue communications will be interrupted click to approve.  Now Rslinx does not see the SLC500 using same profile and cable.  There are some additional timing edits I need to adjust but seems to be locked out.   BOOCREW