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4 FUNCTIONS
MELSEC-QnA
[Data link startup]
1
Turn on the refresh instruction (Yn0) and make the remote output (RY) data valid.
When the refresh instruction (Yn0) is off, all the remote output (RY) data is treated
as 0 (off).
2
Turn on the data link startup by the E
2
PROM parameters (Yn8), and start the data
link.
However, the parameters must be set in E
2
PROM beforehand.
When the data link is started normally, the host data link status (Xn1) turns on.
POINT
The data link can be started from the parameters written in the "parameter information area" in
the buffer memory. (Refer to Chapter 6.)
[Remote input]
3
The remote device station's remote input (RX) 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.
FROM
Programmable controller
CPU
Master station
Remote input (RX)
Remote device station
(station No. 1: occupies 2 stations)
Remote input (RX)
Remote input (RX)
Remote device station
(station No. 3: occupies 2 stations)
toRX0F RX00
toRX1F
RX10
RX2F RX20to
RX3F
RX30
to
RX4F RX40to
RX7FF
RX7F0
to
to
toRX0F
RX00
RX5F RX50to
RX6F RX60to
RX7F RX70to
RX8F RX80to
RX1F
RX10
to
RX0F
RX00to
RX1F
RX10to