Mitsubishi Electronics FX5 ユーザーズマニュアル

21  DEVICES
21.2  User Devices

To handle this, arrange so that C0 coil is not turned OFF while OUT C0 instruction execution condition (M0) is ON, by inserting 
the NC contact execution condition of the OUT C0 instruction in the execution condition of the RST C0 instruction as shown 
by the following circuit example.

 • When a counter is reset by the RST instruction, it cannot count until the RST instruction is set to OFF.

 • When the counter is set as a latch device, the current value of a counter, output contact operation, and the reset image are 

latched.

 • If the ZRST instruction is used, the RST image of a counter is reset.

C0

M0

K10

M0

C0

RST  C0

X000

Current value 

of C0

1

2

3

The current value does not change 

even if pulses are input because the 

C0 reset instruction is valid.

C0 remains reset

"RST C0" is set to ON 

because the contact turns ON.

X010

RST

C0

1

2

3

"RST C0" is set to OFF 

because the contact turns OFF.

[Timing chart]

[Program example]

X010

RST

C0

C0 is reset while X010 turns ON.