Mitsubishi Electric MELSEC iQ-R Series User Manual page 98

■Checking the status when the operation is completed with an error
When an error is detected, the test is immediately completed (with an error).
When the test is completed with an error, the dot matrix at the front side of the RJ71LP21-25 indicates an error number. Take
actions according to the error number displayed. "_" in the error number is displayed as a space on the dot matrix display.
Error No. Loop
direction

0_1

0_2

0_3
0_4 
1_1 Forward loop
side
2_1 Reverse loop
side
3_1 Forward loop
side and
reverse loop
side
1_2 Forward loop
side
2_2 Reverse loop
side
3_2 Forward loop
side and
reverse loop
side
1_3 Forward loop
side
2_3 Reverse loop
side
3_3 Forward loop
side and
reverse loop
side
1_4 Forward loop
side
2_4 Reverse loop
side
3_4 Forward loop
side and
reverse loop
side
4 TROUBLESHOOTING
96
4.2 Checking the Module Status
Description Action
Data error in loop test 1 Check that the optical fiber cable is connected correctly.
Replace the optical fiber cable and perform the test again. If the test fails again, please
consult your local Mitsubishi representative.
Data error in loop test 2 Check that the optical fiber cable is connected correctly.
Replace the optical fiber cable and perform the test again. If the test fails again, please
consult your local Mitsubishi representative.
Data error in repeat test Check that the optical fiber cable is connected correctly.
Replace the optical fiber cable and perform the test again. If the test fails again, please
consult your local Mitsubishi representative.
Data error in loopback test Check that the optical fiber cable is connected correctly.
Replace the optical fiber cable and perform the test again. If the test fails again, please
consult your local Mitsubishi representative.
Loop test 1 completed with Check that the optical fiber cable is connected correctly.
an error Replace the optical fiber cable and perform the test again. If the test fails again, please
consult your local Mitsubishi representative.
Loop test 2 completed with Check that the optical fiber cable is connected correctly.
an error Replace the optical fiber cable and perform the test again. If the test fails again, please
consult your local Mitsubishi representative.
Repeat test completed with Check that the optical fiber cable is connected correctly.
an error Replace the optical fiber cable and perform the test again. If the test fails again, please
consult your local Mitsubishi representative.
Loopback test completed Check that the optical fiber cable is connected correctly.
with an error Replace the optical fiber cable and perform the test again. If the test fails again, please
consult your local Mitsubishi representative.