18: TROUBLESHOOTING
USER’S MANUAL 18-17
Troubleshooting Diagram 11
Turn the input for the PULS or
PWM instruction on.
Correct the pulse width coeffi-
cient setting to 0 through 249.
Is the pulse
width coefficient set to
0 through 249?
Is error indicator
ERR1 on?
Is the input for the PULS
or PWM instruction on?
YES
NO
NO
YES
YES
Call IDEC for assistance.
NO
Make sure of correct wiring for
output Q0.
Output pulses are not generated at output Q0
when using the PULS or PWM instruction.
Is the output indicator
for output Q0 on?
END
See Troubleshooting Diagram 3,
“Error indicator ERR1 is on.”
NO
YES