pressgrove
Member
- Join Date
- Jun 2003
- Posts
- 3
I am looking to interface a control system we're designing with another piece of equipment. I will be using an S7-1500F (failsafe); the other piece of equipment uses a proprietary control system.. This will be a simple I/O interface, but some of the signals will be safety signals (e-stops, machine inhibits, etc.).
I've built interfaces in the past between machines, but never involving safety signals. Most of the signals will be through a bank of relays, but I'm not sure what to do with the safety inhibits. For example, the e-stop input from the other machine will input into a failsafe input card in my PLC, but I'm unclear what to do in between. I'll also need to feed an E-stop signal back to the other machine. (The other machine uses a safety relay for e-stops)
Just a side note.... I'll be using AS-i elsewhere on my system (also failsafe). Proximity to the other machine's controls makes it unnecessary to use AS-i for the interface, but I could use it if it makes it easier.
I've built interfaces in the past between machines, but never involving safety signals. Most of the signals will be through a bank of relays, but I'm not sure what to do with the safety inhibits. For example, the e-stop input from the other machine will input into a failsafe input card in my PLC, but I'm unclear what to do in between. I'll also need to feed an E-stop signal back to the other machine. (The other machine uses a safety relay for e-stops)
Just a side note.... I'll be using AS-i elsewhere on my system (also failsafe). Proximity to the other machine's controls makes it unnecessary to use AS-i for the interface, but I could use it if it makes it easier.