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Automation Outputs
The map is organized into three categories: Command/Feedback Bitmasks, DINT variables, and a command
interface.
Command Bitmasks
The first 64 Tag IDs are reserved for command bits, their usage is covered below.
Heartbeat – The InvisiPac unit will supply a heartbeat that toggles on a 3 second timer. The PLC must mirror the bit
state back through the command bitmask. If the InvisiPac does not see the signal mirrored back after 9 seconds, it
will assume there was a logical communication loss and turn the system off.
F
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IG
Enable PLC Control – This is a bit to indicate to the InvisiPac that the PLC will be initiating commands through the
gateway. Keep this bit high as long as the PLC is in control, dropping the bit low will relinquish control to the
InvisiPac, resulting in the system turning off.
Activate System – Keep this bit high as long as the InvisiPac should be heating and dispensing glue. Pulling this bit
low will turn off the system.
If the system is turned off while "Activate System" is high, it must be toggled low and then high again to re-energize
the system. Conditions that could turn the system off:
•
Heartbeat Expiration
•
Enable PLC Control was pulled low
•
Immediate Stop bit was energized
•
System Power Button on the ADM was pressed
•
Red Stop Button on the ADM was pressed
•
System alarm was detected
•
Pump Idle Timer expired
3A7259C
Communications Gateway Module (CGM)
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Troubleshooting
