Mitsubishi Electronics FX3G User Manual

FX

3S

/FX

3G

/FX

3GC

/FX

3U

/FX

3UC

 Series

Programming Manual - Basic & Applied Instruction Edition

4 Devices in Detail

For the full use of counters as numeric devices, refer to the explanation of applied instructions later.

The ZRST instruction resets also the last stage and reset state of T and C coils.
Accordingly, if the drive contact of X000 is ON in the following program, the counter executes counting after the ZRST
instruction is executed.

Program in the following way to disable counting after execution of the ZRST instruction:

FNC 12

MOV

C 20

D 10

FNC 10

CMP

K100

C 30

M  0

FNC 18

BCD

C 10 K2Y000

FNC 22

MUL

C  5

K  2

D4(D5)

FNC 12

DMOV

C200 D0(D1)

FNC 11

DZCP

K100 K20000 C200

M10

*1

C20 (current value) is transferred to D10.

*1. Make sure to use 32-bit operation instructions for 32-bit counters.

A decimal integer "100" is compared with C30
(current value), and the result is output to M0 to M2.

The contents of C10 (current value) are converted into
BCD, and output to Y000 to Y007.
(Seven-segment display unit is controlled.)

C5 (current value) is multiplied by 2, and transferred
to (D5, D4).

C 200 (current value) is transferred to (D1, D0).

C200 (current value) is compared with a decimal
integer zone 100 to 20000, and the result is output to
M10 and M12.

K10

C0

Circuit program

M0

M0

RST

C100

C0

Timing chart

one operation 

cycle

one operation 

cycle

one operation 

cycle

one operation 

cycle

ZRST instruction 

execution

OUT instruction 

execution

Counting is 

executed when 

X000 is ON.

OUT instruction 

execution

OUT instruction 

execution

X000

ON

OFF

ON

OFF

ON

2

1

0

4

3

OFF

Current 

value 

of C0

M0

FNC 40

ZRST

X000

K10

C0

Circuit program

M0

M0

RST

C100

C0

FNC 40

ZRST

X000