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7 DATA LINK PROCEDURE
MELSEC-QnA
7.4 Checking Module Condition (Hardware Test)
The hardware test checks if the module alone operates normally.
Always perform a hardware test before configuring the system.
Perform a hardware test by following the procedure below:
QnACPU
AJ61
QBT11
A1S
J61
QBT11
STOP
STOP
RESET
Q2ASCPU
Start
Connect the terminating resistor with the module
between terminal DA and DB for the
master/local module.
Set master/local module's "mode setting
switch" to "6".
For AJ61QBT11:
Operate the RUN/STOP key switch and the
RESET key switch of QnACPU in the following
procedure:
Set the RUN/STOP key
switch to "STOP".
Reset the module using
the
RESET key switch.
Power
supply
For A1SJ61QBT11:
Operate the RUN/STOP key switch of the
Q2ASCPU in the following procedure:
The test is started after approximately four
seconds. (The "TEST" LED turns on.)
Continued to the next page
Power
supply