Hello Group,
Anyone familiar with this timer relay? It's called a One Shot/Watchdog in the AB catalog. I need something like this to detect loss of communications between a PC based control application and remote I/O over Ethernet. What I want to do is send a continuous pulse train of maybe 1 second to one of my digital outputs which will continuously retrigger this watchdog. If I ever lose comm., the last state of the digital output should cause the watchdog to time out and it's output go low which will shut down part of my control circuitry. The remote I/O I'm using holds it's last state on communication loss.
My question about this particular AB product is, can anyone tell me whether it will time out with either a maintained high OR low on the "S" (control) input. If not, does anyone know of something similar that will.
Thanks for your help. Mike