BL67/BL20

[Graeme Peek 0]

Are there any internal registers within the BL67 and BL20 that have special functions, e.g first scan etc?

[Nick Clute 0]

Welcome to MrPLC Graeme! Currently there are no system variables provided, but they are considering adding some. Would you have suggestions as to what they should add?

[5150 1]

I recently added a BL20 "Busstop" to a machine with a CompactLogix L32E plc. There is nothing to "heartbeat" the device (to allow a reset function) in case of loss of ethernet communications with the plc. Turck tech support points the finger at A-B and A-B points the finger back at Turck. Fortunately I had a spare input that I directly wired to the terminal strip to give me an "always on" input.