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7   DATA LINK PROCEDURE 

MELSEC-QnA 

 

7.8.2 Checking communication status with specific remote station/local station/standby 

master station (line test 2) 

Confirms if data link can be performed normally with specific remote, local, and 
standby master stations. 
There is no need to set parameters. 
Perform Line Test 2 by following the procedure below: 

 

Continued to the next page

Start 

Set the master module's "mode setting switch" 
to "4". 

The test is started after approximately four
seconds.  (The "TEST" LED turns on.)...Only AJ61QBT11

Set the station number setting switch of the 
master module to the station number of the 
module to be tested. 

Connect only the modules subject of the test to 
the master module, or power supply on only the 
test station. 

For AJ61QBT11:

For A1SJ61QBT11:

Operate the RUN/STOP key switch and the 
RESET key switch of QnACPU in the following 
procedure: 

Operate the RUN/STOP key switch of the
Q2ASCPU in the following procedure: 

STOP

STOP

RESET

Set the RUN/STOP key
switch to "STOP".

Reset the module using the
RESET key switch.

.........Set "0 (online)" at local and master stations.

Powe

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up

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QnACPU

AJ61

QBT11

Power s

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A1S

J61

QBT11