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13-17-621 Page 128
C.65
Fault
Digital Output 18
Short High
The feedback value of
Digital Output 18 is high
while the controller is
attempting to set it low.
This indicates that the
output pin is shorted to
24VDC.
C.66
Fault
Digital Output 19
Short High
The feedback value of
Digital Output 19 is high
while the controller is
attempting to set it low.
This indicates that the
output pin is shorted to
24VDC.
C.67
Fault
Digital Output 20
Short High
The feedback value of
Digital Output 20 is high
while the controller is
attempting to set it low.
This indicates that the
output pin is shorted to
24VDC.
C.68
Fault
Digital Output 1
Short Low
The feedback value of
Digital Output 1 is low
while the controller is
attempting to set it high.
This indicates that the
output pin is shorted to
ground or the output is
overloaded.
1. Check the wiring connected to the associated
digital output for any shorts to ground or DC-.
Check that the device that is connected to the
output (solenoid valve, contactor coil, etc.) is not
shorted by measuring impedance with a multi-
meter.
2. Using the digital output diagnostics page,
observe the feedback output for the digital output
while forcing the value ON and OFF. If shorted or
overloaded, the Feedback result will stay OFF
regardless of the forced value.
3. Remove any wires from the digital output at the
IO module connection and see if the feedback
begins to operate following the commanded
value. If the output operates correctly without
anything connected to the module, the problem is
most likely with the wiring outside the controller. If
the problem persists after removing the wires
from the connector, the problem is most likely
inside the IO module.
C.69
Fault
Digital Output 2
Short Low
The feedback value of
Digital Output 2 is low
while the controller is
attempting to set it high.
This indicates that the
output pin is shorted to
ground or the output is
overloaded.
C.70
Fault
Digital Output 3
Short Low
The feedback value of
Digital Output 3 is low
while the controller is
attempting to set it high.
This indicates that the
output pin is shorted to
ground or the output is
overloaded.
C.71
Fault
Digital Output 4
Short Low
The feedback value of
Digital Output 4 is low
while the controller is
attempting to set it high.
This indicates that the
output pin is shorted to
ground or the output is
overloaded.
C.72
Fault
Digital Output 5
Short Low
The feedback value of
Digital Output 5 is low
while the controller is
attempting to set it high.
This indicates that the
output pin is shorted to