
APPENDIX
MELSEC-A
A-4
(5) Some LED setting differs between the AJ71PB92 and A(1S)J71PB92D.
LED Name
AJ71PB92
A(1S)J71PB92D
SD/RD
Flashes fast during communication.
Flashes during communication with a slave station
on the PROFIBUS network.
The flashing interval is the time set in the "data
control time" of bus parameter.
LED 1 to 8
In standard service mode:
Indicates the preset transmission speed
and the AJ71PB92's station number.
In self-diagnosis mode:
Indicates the self-diagnosis status.
(No LEDs)
B0 to B7
(No LEDs)
In standard service mode:
IN extended service mode:
Indicates the A(1S)J71PB92D's station number.
In self-diagnosis mode:
Indicates the self-diagnosis status.
TEST
(No LEDs)
In self-diagnosis mode: On
In other modes: Off
(6) The 5VDC internal current consumption and weight differ between the AJ71PB92 and
A(1S)J71PB92D.
However, since the both values of the A(1S)J71PB92D are smaller than those of the AJ71PB92,
power supply module replacement, base unit mounting screw reinforcement, etc. are not
necessary.
LED Name
AJ71PB92
AJ71PB92D
A1SJ71PB92D
5VDC internal current
consumption
1.3A
0.54A
0.56A
Weight
0.5kg
0.37kg
0.27kg
(7) Resetting operation differs.
LED Name
AJ71PB92
A(1S)J71PB92D
Reset operation
The RESET switch of the module is used for
reset operation.
The key switch of the PLC CPU is used for reset
operation.