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4.
SETTINGS AND PROCEDURES BEFORE OPERATION
MELSEC-A
(2) If data communications is not possible
The hardware settings or cable connections have probably not
been done correctly.
1
1
Use the troubleshooting charts in Sections 11 2.2, 11 2.3, and
11.2.4 to determine and correct the problem and then repeat the
loopback test.
(3) After the loopback test is finished, a computer link which uses
the dedicated protocol is enabled.
When a computer link uses the no-protocol/bidirectional mode,
do the following:
*Set the mode switches,
*Turn the power to the PC CPU OFFION or reset the PC CPU.
After doing the above, the computer link operation is enabled.
4.8
Inspection and Maintenance
The AJ71C24 module itself requires no particular inspection procedures.
However, carry out the inspections listed in the PC CPU User's Manual to
ensure optimum system performance.
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