Reserved Station Designation; Remote Sub-Master Station - Mitsubishi QJ71LP21 Reference Manual

5 PARAMETER SETTINGS
1) Select a station No. of
the multiplexed remote
sub-master station
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POINT
(1) Set so that the M station
Good example
M
R
M R1
R
M station
R station
M R2
R
M R1
R
M station
R station
M R2
R
(2) When the MELSECNET/H remote I/O network uses the link dedicated
instructions (REMFR, REMTO, READ, WRITE), there is no need for LB/LW for
handshake that was required for MELSECNET/10.

(3) Reserved station designation

The reserved station designation is a function that handles stations to be
connected in the future as stations with communication errors. (These stations
are not actually connected, but they are included in the total number of stations
(slave) in the network.)
Since reserved stations do not affect scan time, full performance can be realized
even when they remain reserved.

(4) Remote sub-master station

Since the multiplexed remote master station must recognize the station No. of the
multiplexed remote sub-master station, set the station No. of the multiplexed
remote sub-master station in the network range assignment screen of the
multiplexed remote master station.
2) After selecting a station No. of the multiplexed remote sub-master
station, click the button to finish the settings.
When the settings are completed, "Sub" is displayed on the station
No. box.
R station and M station
R1 R2
M station
R station
M station
R station
MELSEC-Q
R station do not overlap.
Bad example
M R1
R
M R1
R
M R1
R
M R2
R
M R2
R
R2
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