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As I indicated in an earlier post, I was able to use another computer with a parallel port to test to see if the G540 behaved as it should and it did. It occurred to me that perhaps the issue was...

I was finally able to get my pc up and running again that had a pci parallel port card that I used to use. So using just the parallel cable from the pc to the g540 which eliminates the ESS, it...

Thank you for taking the time to point this out and I understand, but the behavior that you pointed out that it would be energized when the output from the G540 is off isn't the behavior that I would...

There is 48v going to the relays, however, it appears it requires a powered control signal, which isn't what the G540 provides as I understand it now. So, I'm definitely going to be changing those...

Spec sheet the relays are attached for ref, but in general, the coils are rated for 48vdc, same as my power supply; contacts are rated for 250vac; current is rated for 20mA; control signal is rated...

Thanks for the assistance! With the G540 not powered, continuity test shows as open between pins 12 and 5 & 6. With the G540 powered and with the Mist button pushed (configured for output #2, port 1,...

I have a G540 that I'm trying to get to control a couple of relays, but I'm not having any luck. I'm trying to troubleshoot, but I could use some advice and information. Attached is a drawing of my...

I'm working on a controller for a home built cnc machine and would like to have a fresh set of eyes have a look at the attached diagram and let me know if there is anything that seems to be wrong...