Replacing a SyMax model 650 PLC


Thread Starter

Bruce Thompson


I have become aware that one of our major facilities currently uses a SyMax model 650 PLC.

I have only recently started to research this model on the Internet, but I am curious if anyone can provide quick answers to any of these basic questions.

1) When did Square D stop supporting the SyMax model 650?

2) Including eBay, what are some good sources for this models hardware (PLC Processor, I/O modules, communication modules, etc.)?

3) Is there any current programming software and HMI software that supports this model?

4) Your basic experiences on converting from SyMax: When, to what, how large was your system, time to convert?

Thanks much for the help. As we get further into this I will probably have additional questions to tap into your collective experiences and insight.