Mitsubishi Electronics 0 ユーザーズマニュアル

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Are CH Coincidence signal No.1 reset command (Y0, 
Y8) and CH Coincidence signal No.2 reset command 
(Y7, YF) off?

Turn off CH Coincidence signal No.1 reset command (Y0, Y8) and/or CH 
Coincidence signal No.2 reset command (Y7, YF).

Are the values in CH Coincidence output point No.1 
(Un\G4, Un\G5, Un\G36, Un\G37) and CH Coincidence 
output point No.2 (Un\G6, Un\G7, Un\G38, Un\G39) set 
within the count range of the ring counter? (for the ring 
counter function only)

Set the value(s) in CH Coincidence output point No.1 (Un\G4, Un\G5, 
Un\G36, Un\G37) and/or CH Coincidence output point No.2 (Un\G6, Un\G7, 
Un\G38, Un\G39) within the count range of the ring counter.

Is CH Coincidence signal enable command (Y2, YA) 
on?

Turn on CH Coincidence signal enable command (Y2, YA).

Is a voltage applied to the power supply terminal for 
external coincidence output?

Apply a voltage to the power supply terminal for external coincidence output.

Is the external wiring for the coincidence output point No.1 
terminal (EQU1) and the coincidence output point No.2 
terminal (EQU2) correct?

Check the external wiring and make necessary corrections.

Is the intelligent function module interrupt pointer setting 
in the PLC parameter correct?

Review the intelligent function module interrupt pointer setting.

Are program execution control instructions, such as the 
IMASK instruction, correctly used?

Review the program.

Are CH Counter value coincidence (point No.1) (X2, X9) 
and CH Counter value coincidence (point No.2) (X6, 
XD) off?

Reset (turn off) CH Counter value coincidence (point No.1) (X2, X9) and/or 
CH Counter value coincidence (point No.2) (X6, XD) using CH 
Coincidence signal No.1 reset command (Y0, Y8) and/or CH Coincidence 
signal No.2 reset command (Y7, YF).

Is CH External preset request detection (X4, XB) off?

Reset (turn off) CH External preset request detection (X4, XB) using CH 
External preset detection reset command (Y5, YD).

Is the external wiring for the preset input terminal correct? Check the external wiring and make necessary corrections.