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CHAPTER 11 TROUBLESHOOTING
11
11.4 U
nit T
est
11.4
Unit Test
Run a unit test to check if there is any abnormality in the high-speed counter module.
Remark
When unit test fails, the error details can be checked in the error history.
To check the error history, set the station number of the high-speed counter module and connect the module to the master
station with an Ethernet cable.
For the error history, refer to the following.
• Checking by executing a command of the slave station (
• Error history 1 to 15 (address: 0A00
H
to 0AFF
H
) (
1.
Power off the module.
2.
Connect the PORT1 and PORT2 of the high-speed
counter module with an Ethernet cable.
3.
Set the station number setting switch as follows.
• x10: TEST
• x1: 0
4.
Power on the module.
5.
Unit test begins.
The MODE LED flashes while the unit test is being
executed.
6.
The MODE LED turns off when the unit test is
completed.
• When completed
The ERR. LED does not turn on, but remains off.
• When failed
The ERR. LED turns on.
If the test fails, replace the Ethernet cable and run the test
again. If the test fails again, it may be due to a hardware
failure in the high-speed counter module. Please consult
your local Mitsubishi representative.
Ethernet cable
: Flashing
: OFF
: ON
: Flashing
: ON
: Flashing
: ON
When completed
When failed
: OFF
: OFF
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