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4.3.3 Hardware test
This test checks the internal components of the MELSECNET/H remote I/O module.
When the test completes with an error, the possible cause is a hardware failure of the MELSECNET/H remote I/O
module. Please consult your local Mitsubishi representative.
Remark
Check the test condition and error details with the following link special register areas.
• Baton pass status (host) (SW0047) 1F
H
: Offline test
• Cause of baton pass interruption (SW0048) 2
H
: Offline test
• Offline test execution item/faulty station (requesting side) (SW00AC) 9
H
: Hardware test
• Offline test result (requesting side) (SW00AD) 0: Normal, 1 and later: Error code
1. For the QJ72LP25-25, QJ72LP25G, and
QJ72LP25GE connect the IN connector and OUT
connector by an optical fiber cable.
Do not connect a cable or terminating resistor to
the QJ72BR15.
2. Set the mode setting switch on the
MELSECNET/H remote I/O module to "3".
3. Power on the target module.
The hardware test starts and the T.PASS LED
flashes.
4. The test is completed normally when the T.PASS
LED flashes 20 or more times (approx. 10
seconds) and the ERR. LED does not flash.
When the test completes with an error, the ERR.
LED flashes.
For QJ72LP25-25,
QJ72LP25G, QJ72LP25GE
(optical loop system)
For QJ72BR15
(coaxial bus system)
Connect the
IN and OUT
connectors.
Do not connect
anything.
MODE
3
Flashing