Operation Using a Programmable Logic Controller (PLC)

ProMix PD2K Network Inputs

The ProMix PD2K Network Inputs are Write-Read capable, but should be treated as outputs from a PLC or other networking device. These registers allow the user to control system operation and configure system settings remotely. Invalid values (i.e. out of bounds or not consistent with system configuration) will be ignored by the ProMix PD2K. All values must be written as integers. Floating point numbers are not supported.

Do not rely on these registers for Read status, other than to confirm data that has been written and accepted.

NOTE: The PD2K system does not refresh the values for these registers. At power up all input registers initialize to invalid values.

INPUT REGISTER 00: System Mode Command

The System Mode Command register accepts a number that represents a command to the PD2K system to initiate a particular operation. Some operation modes may be initiated only under certain conditions (see Figures 5 – 9 for details).

Number

Operation Mode

Description

 

 

 

1

No OP

The system takes no action.

 

 

 

2

Power Pumps

The system powers on or powers off the pumps.

 

 

 

3

Remote Stop

The system stops all current operations and turns off power to the

 

 

pumps.

4

Recipe Change

The system initiates a recipe change. (See also Register 7.)

 

 

 

5

Mix Fill

The system fills the mix manifold and gun with material at ratio for

 

 

a valid recipe.

6

Mix

The system initiates a mix/spray cycle.

 

 

 

7

Purge A

The system purges only Material A out through the gun.

 

 

 

8

Purge B

The system purges only Material B out through the gun.

 

 

 

9

Standby

The system puts all active pumps into Standby mode.

 

 

 

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332564B

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Graco 332564B important safety instructions ProMix PD2K Network Inputs, Input Register 00 System Mode Command