Filter
Top Products
Operation Using
a Programmable Logic Controller (PLC)
INPUT REGISTER 08: Clear Active Alarm
The Clear Acti
ve Alarm register is used to
acknowledge a
n alarm remotely so that the system
may resume ope
ration. Be sure that the alarm
condition has
been alleviated. Write a 1 to this
register to ac
knowledge the latest active alarm. If
more than one
alarm is currently active only the most
recent alarm
will be acknowledged. A repeated write
should be per
formed to clear any remaining active
alarms. See fi
gure 9.
(See System Errors, page 88 for more information
on clearing alarms.)
NOTE: This register is not polled by the ProMix
PD2K. An alarm is cleared only when a value of ‘1’
is written to this register. It is recommended that the
automation reset this register by writing a 0 to it at all
other times to avoid inadvertently clearing an alarm.
INPUT REG
ISTER 09: Job Complete
The Job Complete register is used to log the current
job remotely. Write a ‘1’ to the register to command
theProMixPD2Ktoflagajobcomplete.
(See Usage Screen, page 64 for more information on
Job Logs and Job Complete.)
NOTE: Th
is register is not polled by the ProMix
PD2K. A
job is logged only when a value of ‘1’
is writ
ten to this register. It is recommended the
automa
tion reset this register by writing a 0 to it at all
other t
imes to avoid inadvertently logging a job.
INPUT REGISTER 10: Gun 1 Trigger
TheGun1Trigg
er register is used to signal the
ProMix PD2K wh
en the automatic spray device is
triggered. Th
is signal should be sent any time the
spray device i
s triggered. The state of this register
provides timi
ng for alarm functions and also drives
the flow contr
ol algorithm.
NOTE: If enabled, it is imperative that this signal be
sent any time the spray device is triggered. Without it
the flow control features will not work.
• Write a value of ‘1’ to signal that the gun is
triggered.
• Write a value of ‘0’ to signal that the gun is NOT
triggered.
NOTE: This
register is used only if the Gun Trigger
is set to ‘N
etwork’ via System Screen 5 on the ADM.
If it is se
t to ‘Discrete’ this register is ignored and
gun trigg
er is handled via the discrete input. See
Digital I
nputs, page 25.
NOTE: Because timing is so
critical
for flow control Graco recommends that users
provide a
discrete input to minimize latency effects.
Input Register 10
Gun Trigger
Discrete Signal
10 1 0
ProMix PD2K
Gun Trigger State
Figur
e 12 Gun Trigger Timing (Network and Discrete
Signa
ls Shown
INPUT REGISTER 11: Gun 2 Trigger
INPUT REGISTER 12: Gun 3 Trigger
INPU
T REGISTER 13: Gun 4 Trigger
These registers are not used.
INPUT REGISTERS 14 – 21: DCS Command
Structure
Se
e Dynamic Command Description, page 47.
38 332564B