When The Qd63P6 Does Not Start Counting - Mitsubishi Electric MELSECQ Series User Manual

8
TROUBLESHOOTING
8.2
Doesn't the programmable controller CPU
indicate an error?
Do the LEDs of A and B turn ON by directly
applying voltage using such as voltage stabilizer
to pulse input terminals of A and B?
Is the external wiring of A and B normal?
Is the count enable command (Y04) ON?
Are the present value A (Un\G10 and 11)/present
value B (Un\G200 and 201) read by the sequence
program the same with the value made on
[Present value selection setting] of the intelligent
function module switch setting?
Are the pulse input method and pulse input mode
set with the intelligent function module switch
setting the same?
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When the QD63P6 Does Not Start Counting

Table 8.6 When the QD63P6 does not start counting
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Action
If the LED on the programmable controller CPU
indicates an error, correct the error with reference
to troubleshooting in the programmable controller
CPU's manual for normal operation.
If they turn ON, check the external wiring and
encoder side and correct the error.
If they remain OFF, it is a hardware failure. Please
consult your local Mitsubishi representative,
explaining a detailed description of the problem.
Check the external wiring and correct the error.
Turn the count enable command (Y04) ON with the
sequence program.
Match the present value A (Un\G10 and 11)/
present value B (Un\G200 and 201) to be read by
the sequence program with the value made on
[Present value selection setting] of the intelligent
function module switch setting.
Match the pulse input method with the pulse input
mode made on the intelligent function module
switch setting.
8.2 When the QD63P6 Does Not Start Counting
1
Reference
2
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Section 4.3
3
Section 4.4
Section 3.3.2
4
Section 3.4
Section 4.5
Section 4.5
Section 5.1
5
6
7
8
8
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