Mitsubishi Electric MELSEC iQ-R Series User Manual page 103

For a redundant system
Operating procedure
1.
Connect the OUT connector of the executing station and the IN connector of the executed station with optical fiber
cables.
• When a redundant system is configured in both the executing station and the executed station
(1) (2)
(1) Control station (station No.1): Executing station (A station where station-to-station test is performed)
(2) Normal station (station No.2): Executed station (A station where station-to-station test is performed)
(3) Normal station (station No.3): Offline (A station where station-to-station test is not performed)
• When a redundant system is not configured in the executing station but is configured in the executed station
(1) (2)
(1) Control station (station No.1): Executing station (A station where station-to-station test is performed)
(2) Normal station (station No.2): Executed station (A station where station-to-station test is performed)
(3) Normal station (station No.3): Offline (A station where station-to-station test is not performed)
2.
Set the operation mode for the redundant CPU to "Backup Mode".
When the power of both systems cannot be turned on or off, set the operation mode for the redundant CPU to "Separate
Mode".
The following shows the mode setting when station-to-station test is performed for the redundant system.
Set station Operation mode of the
redundant CPU
A station where station-to- Backup Mode
station test is performed
Separate Mode
A station where station-to- Backup Mode
station test is not performed
Separate Mode
3.
Click the [Apply] button for the executing station and executed station.
4.
Write the module parameters to the CPU module of the executing station and executed station.
5.
Reset the CPU module of the executed station.
6.
Reset the CPU module of the executing station.
7.
If the test is completed with an error, check the following.
■Checking the status and result
Check the status and result of station-to-station test with the LED indicator of the module.
Test status LED indication
Test in progress The RUN LED is turned on, the ERR LED is turned off, and the T PASS LED flashes.
The SD/RD LED is turned on, and the L ERR LED is turned on or off.
Executing station: The dot matrix LED indicates "MD5".
Executed station: The dot matrix LED indicates "MD6".
Completed successfully Since the test is repeated during normal operation, the test is judged to have been completed successfully when the T PASS LED
flashes 20 times (for about 10 seconds) or more.
Completed with an error The ERR LED flashes.
Executing station: The dot matrix LED indicates "ER5" and error number alternately at intervals of one second.
Executed station: The dot matrix LED indicates "ER6" and error number alternately at intervals of one second.
(3)
(3)
Module operation mode of the RJ21LP-25
Set the mode to "Test between Master Station" or "Test between Slave Station".
"Offline"
"Online"
4 TROUBLESHOOTING
4.2 Checking the Module Status
4
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