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4 FUNCTIONS
MELSEC-QnA
[On/off data from the master station
the local station]
7
With the TO instruction, the on/off data to be sent to the local station is written to the
master station's "remote output (RY)" in the buffer memory.
8
The data in the "remote output (RY)" in the buffer memory is automatically (for each
link scan) stored in the local station's remote input (RX) in the buffer memory.
9
The input status stored in the "remote input (RX)" in the buffer memory is received
to the programmable controller CPU with the FROM instruction.
TO
to
RX0F to RX00
RX1D to RX10
RX2F to RX20
RX3F to RX30
RX4F to RX40
RX5F to RX50
RX6F to RX60
RX7F to RX70
RX8F to RX80
RX9D to RX90
RXAF to RXA0
RX7FF to RX7F0
to
RY0F to RY00
RY1D to RY10
RY2F to RY20
RY3F to RY30
RY4F to RY40
RY5F to RY50
RY6F to RY60
RY7F to RY70
RY8F to RY80
RY9D to RY90
RYAF to RYA0
RY7FF to RY7F0
Programmable controller
CPU
Master station
Remote output (RY) Remote input (RX) Remote input (RX)
to
RX0F to RX00
RX1D to RX10
RX2F to RX20
RX3F to RX30
RX4F to RX40
RX5F to RX50
RX6F to RX60
RX7F to RX70
RX8F to RX80
RX9D to RX90
RXAF to RXA0
RX7FF to RX7F0
...The last 2 bits cannot be used when the master station and the local station are communicating.
Local station
(station No. 1:
occupies 1 station)
Local station
(station No. 2:
occupies 4 stations)