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7 DATA LINK PROCEDURE
MELSEC-QnA
7.8 Checking the Connection Condition (Line Test)
The Line Test is performed after all modules are connected with CC-Link dedicated
cables to check if the connection is correctly established to perform data link with each
remote, intelligent device, local, and standby stations.
POINT
Line Test 2 is performed when an error has occurred in Line Test 1.
Therefore, there is no need to perform Line Test 2 if no error was detected in Line Test 1.
7.8.1 Checking connection and communication status with remote station/local
station/standby master station (line test 1)
Confirms if data link can be performed normally with all (64 stations) the remote, local,
and standby master stations.
Perform Line Test by following the procedure below:
Continued to the next page
Start
Set the master module's "mode setting switch"
to "3".
The test is started after approximately four
seconds. (The "TEST" LED turns on.)...Only AJ61QBT11
For AJ61QBT11:
Power supply
QnACPU
AJ61
QBT11
For A1SJ61QBT11:
Operate the RUN/STOP key switch and the
RESET key switch of QnACPU in the following
procedure:
Power supply
Q2ASCPU
A1S
J61
QBT11
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 stations.