Discrete I/O
The controller can accept up to 19 I/O interface
signals. Systems can be designed to integrate from
1 signal up to all 19 signals. The examples in this
manual describe a basic integration (6 I/O signals
used) and a complex integration (all 19 I/O signals
used).
See
for available signals.
Isolation
The discrete I/O interface signals are isolated from
circuit ground. Isolation is required to prevent
disturbance of the measurement of the spraying
current.
NOTE: The isolation is not designed to isolate
hazardous potentials.
I/O Grounding
Pins 8, 12, and 17 are the I/O Ground pins. Connect
a ground from each connecting device to one or more
of these pins. This will match the potential of the Pro
Xpc Auto Controller and the connecting device.
REMOTE Input Operation
In order to accept remote input commands from the
discrete I/O interface, the following conditions must
be met:
• The discrete I/O interface must be selected by
setting Parameter P02 = 1.
See
.
• The REMOTE Enable input, on the Discrete I/O
cable, pin 4, must have 24VDC (logical “1”) applied
to it to select REMOTE mode.
Connect the desired input signals. During REMOTE
input operation, error confirmation is the only local
input (using the keypad) possible.
NOTE: Values for presets P001 – P250 must be set
up prior to entering REMOTE mode. Preset P000
is the only preset which can be altered using the
Discrete I/O cable signals when the controller has
been placed in REMOTE mode.
REMOTE Output Operation
Connect the desired signals. Digital output signals
are generated unconditionally. Analog output signals
require 24VDC on Analog Output External Power (pin
16) on the discrete I/O Interface cable.
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