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Operation Using a Programmable Logic Controller (PLC)
INPUT REGISTER
INPUT
INPUT
REGISTER
REGISTER 08:
08: Gun
08:
Gun Trigger
Gun
The Gun Trigger State register is used to signal the
ProMix PD3K+ when an automatic spray device is
triggered. This signal should be sent any time the
spray device is triggered. The state of this register
provides timing for alarm functions and also drives
the flow control algorithm.
The register is formatted as a bit vector with bits 0,
1, and 2 representing gun trigger inputs 1, 2, and 3,
respectively.
NOTE: If enabled, it is imperative that this signal be
NOTE:
NOTE:
sent any time the spray device is triggered. Without
it, the flow control features will not work.
• Write a value of '1' to bit 0, 1, or 2 to signal gun 1,
2, or 3 is triggered, respectively.
• Write a value of '0' to bit 0, 1, or 2 to signal gun 1,
2, or 3 is NOT triggered, respectively.
NOTE: This register is used only if the Gun Trigger
NOTE:
NOTE:
is set to 'Network' via System Screen 6 on the ADM.
If it is set to 'Discrete' this register is ignored and
gun trigger is handled via the discrete input. See
Digital Inputs, page
24.
NOTE:
NOTE: Because timing is so critical for flow control,
NOTE:
Graco recommends that users provide a discrete
input to minimize latency effects.
36
Trigger State
Trigger
State
State
Input Register 08,
1
0
Bit 0
Gun Trigge r 1
Discrete Signal
ProMix PD3K+
Gun Trigge r 1 S ta te
Figure 14 Gun Trigger Timing (Network and Discrete
Signals Shown
INPUT
INPUT REGISTER
INPUT
REGISTER
REGISTER 9: 9: 9: Set
Set
Set Active
The Set Active Gun register allows for remotely
changing between guns for purging or spraying.
NOTE: If the system is not configured for more than
NOTE:
NOTE:
1 gun, this register is ignored.
INPUT REGISTERS
INPUT
INPUT
REGISTERS 10
REGISTERS
10 – – – 17:
10
Structure
Structure
Structure
See
Dynamic Command Description, page
1
0
Active Gun
Active
Gun
Gun
17: DCS
17:
DCS Command
DCS
Command
Command
47.
3A6287E
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