Mitsubishi Electronics AJ61QBT11 Home Theater Server User Manual


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13 - 13
MELSEC-QnA
13 TROUBLESHOOTING
13.4.3 When a cable is shorted
Data link for all the stations is lost.
You cannot identify a short circuit occurred by the LED indications.
Remote device
station
Local
station
Power
supply
Terminating
resistor
A
J61QBT11
B
R
A
T
E
156K
625K
2.5M
5M
10M
TEST
S0
S1
S2
T
E
S
T
E
R
R
O
R
A
J61QBT11
B
R
A
T
E
156K
625K
2.5M
5M
10M
TEST
S0
S1
S2
SD
RD
T
E
S
T
E
R
R
O
R
PW L RUN L ERR.
SD
RD
SD
RD
RUN
L RUN
L ERR.
PW
SD
RD
Remote I/O
station
Stabilized power
supply (24VDC)
Power
supply
Master
station
Stabilized power
supply (24VDC)
Terminating
resistor
................. indicates the "light-on" status.
................. indicates the "light-off" status.
................. indicates the "flashing" status.
................. indicates one of the "light-on",
"light-off" or "flashing" status.
RUN
ERR.
MST
S MST
LOCAL
CPU R/W
SW
M/S
PRM
TIME
LINE
L RUN
L ERR.
RUN
ERR.
MST
S MST
LOCAL
CPU R/W
SW
M/S
PRM
TIME
LINE
L RUN
L ERR.
Programmable
controller CPU
Programmable
controller CPU
13.4.4 When the link is stopped at the master station
All stations will not be able to perform data link.
The "L RUN" LED turns off for all stations except for the master station.
Remote device
station
Power
supply
Local
station
Terminating
resistor
A
J61QBT11
B
R
A
T
E
156K
625K
2.5M
5M
10M
TEST
S0
S1
S2
T
E
S
T
E
R
R
O
R
A
J61QBT11
B
R
A
T
E
156K
625K
2.5M
5M
10M
TEST
S0
S1
S2
SD
RD
T
E
S
T
E
R
R
O
R
PW L RUN L ERR.
SD
RD
SD
RD
RUN
L RUN
L ERR.
PW
SD
RD
Remote I/O
station
Stabilized power
supply (24VDC)
Power
supply
Master
station
Stabilized power
supply (24VDC)
Terminating
resistor
................. indicates the "light-on" status.
................. indicates the "light-off" status.
................. indicates the "flashing" status.
................. indicates one of the "light-on",
"light-off" or "flashing" status.
RUN
ERR.
MST
S MST
LOCAL
CPU R/W
SW
M/S
PRM
TIME
LINE
L RUN
L ERR.
RUN
ERR.
MST
S MST
LOCAL
CPU R/W
SW
M/S
PRM
TIME
LINE
L RUN
L ERR.
Programmable
controller CPU
Programmable
controller CPU
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