Graco 3A2098H important safety instructions Appendix D I/O Signal Descriptions, Automation Inputs

Appendix D - I/O Signal Descriptions

Appendix D - I/O Signal Descriptions

This section provides details about the CGM and DGM Automation Input and Output signals.

Automation Inputs

Dispenser (Fluid Plate) Ready

This signal is 0 on power up. This signal will be 1 under in the following conditions:

•The system is in an active state, and

•The dispenser (fluid plate) does not have an active Alarm (Deviations have no effect).

Dispenser (Fluid Plate) No Alarm

For systems with a CGM, this signal will be 1 under the following condition:

•The system does not have an alarm.

•For systems with a DGM, this signal can be configured to be active high or active low. See

Discrete Gateway (Automation) Setup Screen, page 104.

Dispenser (Fluid Plate) No Error

For systems with a CGM, this signal will be 1 under the following condition:

•The system does not have an error (alarm, devi- ation, or advisory).

•For systems with a DGM, this signal can be configured to be active high or active low. See

Discrete Gateway (Automation) Setup Screen, page 104.

Dispense in Process

This signal is 0 on power up. This signal will be 1 under the following condition:

•The system is in the middle of a job.

Dispense Volume OK

This signal will be 1 under the following conditions:

•The system has completed a job, and

•the volume of the job is within the tolerance specified, and

•the style strobe is 1.

Dispenser (Fluid Plate) Purge Request

This signal is 1 on power up if a purge interval has been defined, 0 on power up otherwise. Any dispensing will turn off this bit and reset the purge timer. This signal will be 1 under the following condition:

•The system purge interval timer has expired.

Dispenser (Fluid Plate) Remote Start / Purge in Process

This signal is 0 on power up. This signal will be 1 under the following conditions:

•A remote start sequence is in process. This sig- nal shall remain asserted until the dispense equipment has achieved Dispense Ready sta- tus.

•A purge sequence is in process. This signal shall remain asserted until the purge sequence is complete.

Units

All units settings are set in the Advanced Display Mod- ule. The following signals are used to communicate this information to the automation controller.

Pressure Units

Value	Units
0	psi
1	bar
2	MPa
3	reserve

Errors

Error numbers are formed by 8 bits. This is the error number in the system.

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