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11 COMMUNICATION BETWEEN THE MASTER STATION AND THE
LOCAL STATION
MELSEC-QnA
11.4 Performing the Data Link
Turn on the power supply of the local station first, then the power supply of the master
station to start the data link.
11.4.1 Confirming the operation by LED display
The following diagram shows the LED display status of the master station and the local
station when the data link is performed normally.
(1) LED display of the master station
Confirm that the LED display shows the following status:
Module is normal.
Set as a master station.
Communicating with programmable
controller CPU.
The data link is proceeding normally.
The transmission speed is set to
2.5Mbps.
Sending data.
Receiving data.
AJ61QBT11
RUN 156K
ERR. 625K
MST 2.5M
S MST 5M
LOCAL 10M
CPU R/W
SW
M/S TEST
PRM S0
TIME S1
LINE S2
L RUN SD
L ERR. RD
B
R
A
T
E
T
E
S
T
E
R
R
O
R
(2) LED display of the local station
Confirm that the LED display shows the following status:
Set as a local station.
The transmission speed is set to
2.5Mbps.
Module is normal.
Communicating with programmable
controller CPU.
The data link is proceeding normally.
Sending data.
Receiving data.
AJ61QBT11
RUN 156K
ERR. 625K
MST 2.5M
S MST 5M
LOCAL 10M
CPU R/W
SW
M/S TEST
PRM S0
TIME S1
LINE S2
L RUN SD
L ERR. RD
B
R
A
T
E
T
E
S
T
E
R
R
O
R