stasis
Member
I'm sure this has been addressed before, but...
I need to know (more accurately, the plc needs to know) when power drops off of a touchscreen, or if the cable comes unplugged from the plc. The HMI is a Red Lion G306 tied into the serial port on the AB 5/03.
I know that I can flag bits in the HMI when the plc loses power. I can flag bits when comms are active or inactive, but this is a first for me...I've checked the S bits in RS500, but this doesn't quite seem to be what I need.
I need to know (more accurately, the plc needs to know) when power drops off of a touchscreen, or if the cable comes unplugged from the plc. The HMI is a Red Lion G306 tied into the serial port on the AB 5/03.
I know that I can flag bits in the HMI when the plc loses power. I can flag bits when comms are active or inactive, but this is a first for me...I've checked the S bits in RS500, but this doesn't quite seem to be what I need.