Mitsubishi 800 Series User Manual page 92

5. Handling Component Equipment Modules MELSEC GOT
RUN
SD
RD
CRC
OVER
@
Turn on the power supply to the GOT
and start
the self-test.
The test status and results are shown in the display section of
the network module LED.
(Judging the test results)
Normal -The following flash in sequence: "CRC", "OVER", "AB.IF", "TIME", "DATA,
Error
-
One of the above LEDs lights, and the test stops. The following should be
"UNDER".
checked as possible causes of the error:
.
The transmission side and receiving side have not been connected with a cable.
A cable may be disconnected.
The transmission side of the main loop is connected to the transmission side of the
auxiliary loop, and the receiving side of the main loop is connected to the receiving
side of the auxiliary loop.
a
There is a problem with the hardware of the network module.
@
If the results of the test are normal, the test procedure is con-
cluded.
Set the mode change setting switch of the network module to
"O",
and turn on the power supply to the GOT (this sets the on-
line mode).
5 - 1 5