Mitsubishi Electric FX3G SERIES Programming Manual page 321

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
2. When specifying high-speed counters (C235 to C255)
The ZRST instruction is handled as the 16-bit type, but 32-bit counters can be specified in
However, it is not possible to specify a 16-bit counter in
should be the same type.
Example
Command
input
FNC 40
ZRST
Program example
1. When using devices in the latch area as non-latch type devices
In the program shown below, when the power to the PLC is turned ON or when the PLC mode is changed to RUN, the
specified ranges of bit devices and word devices are reset at one time.
M8002
Initial pulse
C180 C230
16-bit 32-bit
counter counter
D D
1 2
FNC 40
M500 M599
M500 to M599 are reset at one time.
ZRST
D D
1 2
C235 to C255 are reset at one time.
FNC 40
C235 C255
("0" is written to them, and their contacts are reset.)
ZRST
D D
1 2
FNC 40
S500 to S599 are reset at one time.
S500 S599
ZRST
12 Data Operation – FNC 40 to FNC 49
12.1 FNC 40 – ZRST / Zone Reset
D D and specify a 32-bit counter in
1 1
Command
input
FNC 40
C180
ZRST
FNC 40
C200
ZRST
D D and D D .
1 1 1 2
D D ; D D and D D
1 2 1 1 2 1
C199
C230
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