User's Manual

Operation
18 3A1149D
Primary DGM Digital Outputs
See DGM Digital Outputs table in the Primary DGM Pin
Assignments section beginning on page 10 for pin
numbers associated with each bit description.
Digital Output 1: DGM to PLC Heartbeat
See the DGM to PLC Heartbeat description in the Pri-
mary DGM Digital Inputs section beginning on page
16.
Digital Output 2: Ready To Dispense
This bit is high when the system is ready to begin dis-
pensing.
Digital Output 3: Dispense In Progress
This bit is high when the machine is dispensing.
Digital Output 4: Flow Rate/Pressure
Setpoint Rejected
This bit is high when the requested setpoint change is
rejected.
Digital Output 5: Dispense Mode Selected
When this bit is low, the selected Dispense mode is
Flow. When this bit is high, the selected Dispense mode
is Pressure.
Digital Output 6: Error Present
If an error is generated this output will be high. The PLC
programmer should monitor the Fault Code bits to deter-
mine if the system is in a healthy state but this will serve
as an additional and redundant alert.
Digital Output 7-14: Fault Codes
This 8-bit pattern indicates what error is being displayed.
See the Fault Code Bit Pattern Table on page 31. The
fault code is removed when it is acknowledged. For best
results, check the ADM.
Digital Output 15-17: Operating Mode
Selected Bits
These bits form a bit pattern to indicate which operating
mode is selected. See the operating mode bit patterns
table in the Primary DGM Digital Inputs section begin-
ning on page 16.
Digital Outputs 18-24: Shot Selected Bits
When in Shot mode, these bits are used to form a bit
pattern to indicate which shot is selected. See the shot
selection bit patterns table in the Primary DGM Digital
Inputs section beginning on page 16.
When in Standby mode, Digital Outputs 22-24 each per-
form a different function:
Digital Output 22:
• Dispense Valve Locked: This bit is high when the
dispense valve is locked.
Digital Output 23:
• Dispense Valve Open: This bit is high when the
dispense valve is open.
Digital Output 24:
• Pump Parked: This bit is high when the pump is in
the parked position.