symax 400

[grc 1]

I am working on a old system that has symax 400. Halt is flashing, Mem is on,Data error solid on,Reset is solid. To get the error code I need a programmer. There are a couple on ebay, How can I tell which is the correct programmer to read error codes .

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Thanks             

[Crossbow 295]

They also offered DOS based programming software for that PLC, and if you can get online with the software, it will tell you the error.

Manuals for Symax are getting harder to find on the Net, it's a long obsolete controller.

Sounds to me like the battery went dead and the program was lost.