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4 FUNCTIONS
MELSEC-QnA
[Remote input]
3
The remote I/O station's input status is automatically (for each link scan) stored in
the master station's "remote input (RX)" in the buffer memory.
4
The input status stored in the "remote input (RX)" in the buffer memory is received
to the programmable controller CPU with the FROM instruction.
32 points module16 points module
FROM
Programmable controller
CPU
Master station
Remote input (RX)
Remote I/O station
(station No. 1: occupies 1 station)
Remote I/O station
(station No. 2: occupies 1 station)
to
RX0F
RX00
toRX1F RX10
RX2F
RX20to
RX3F RX30
to
RX4F RX40
to
RX7FF RX7F0to
to
toX0F
X00
to
X0F X00
toX1F
X10
[Remote output]
5
With the TO instruction, the on/off data output from the remote I/O station is written
to the "remote output (RY)" in the buffer memory.
6
The output status stored in the "remote output (RY)" in the buffer memory is
automatically output (for each link scan) from the remote I/O station.
Remote I/O station
(station No. 3: occupies 1 station)
TO
toRY0F RY00
toRY1F RY10
RY2F
RY20
to
RY3F RY30
to
RY4F
RY40
to
RY5F
RY50
to
RY6F
RY60
to
RY7F
RY70
to
RY8F RY80
to
RY7FF
RY7F0to
to
to
Y0F Y00
toY0F Y00
toY1F
Y10
Programmable controller
CPU
Master station
Remote I/O station
(station No. 4: occupies 1 station)
16 points module 32 points module
Remote input (RY)