17 years ago
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
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.