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4. SETUP AND PREPARATION BEFORE OPERATION MELSEC-A
4-3
Number Name Description
7
Operation status
display LED
AJ65BT-64DAV
1 3 5 7 9 111315171921232527
2 4 6 8 10 12 14 16 18 20 22 24 26
DA DG
DB SLD (FG) TEST TEST
HLD/
CLR
HLD/
CLR
CH1/
V+
CH2
V+
CH3
V+
CH4
V+
COM COM COM COM
+24V 24G
+24V 24G
COM COM COM COM
AJ65BT-64DAI
1 3 5 7 9 111315171921232527
2 4 6 8 10 12 14 16 18 20 22 24 26
DA DG
DB SLD (FG) TEST TEST
HLD/
CLR
HLD/
CLR
CH1/
I+
CH2
I+
CH3
I+
CH4
I+
COM COM COM COM
+24V 24G
+24V 24G
COM COM COM COM
8
Terminal block
HLD/CLR setting terminal
....HOLD is set by shorting between terminals, and CLEAR is set by releasing.
Test mode setting terminal
....By shorting between terminals, the system enters the test mode
PW LED On : When the power is on
Off : When the power is shut off
Normal
mode
On : Normal operation
Flashing : Write data error
Off : 24VDC power shutoff or watchdog
timer error
RUN LED
Test mode Flashing : Flashes in 0.5 second intervals
when the offset/gain setting switch
is at OFFSET or GAIN. Flashes in
0.1 second intervals when
exceeding the upper or lower limits
of the allowable setting using the
UP/DOWN switch.
Off : When the offset/gain setting switch
is at SET.
L RUN LED On : Normal communication
Off : Communication interrupted (timeout error)
SD LED On : Data being transferred
RD LED On : Data being received
L ERR. LED On : When the baud rate or the station number
setting is out of range.
Flashing at regular intervals :
When the baud rate or station number setting is
changed after power-on or reset.
Flashing at irregular intervals :
When you forgot fitting the termination resistors
or the module or CC-Link dedicated cable is
affected by noise.
Off : Normal communication