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11.4 Coincidence Output Function Does Not Correctly
Operate
11.5 Coincidence Detection Interrupt Does Not Occur
11.6 Present Value Cannot be Replaced with the Preset Value
Check item Action
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.
Check item Action
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).
Check item Action
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.