Mitsubishi Electric 800 Series Instruction Manual page 121

Device No.
SD1510 to SD1517
SD1518 to SD1525
SD1526 to SD1533
SD1534 to SD1541
SD1542 to SD1549
 Special register (slave)
Device No.
SD1470 to SD1477
SD1478 to SD1485
SD1486 to SD1549
 Troubleshooting
Condition
Communication is not
established.
A command sent by the master is
not applied to a slave.
120
2. Ethernet Communication
2.13 Inverter-to-inverter link function
Name
Inverter-to-inverter link send data 1 to 8 (slave 3)
Inverter-to-inverter link receive data 1 to 8 (slave 4)
Inverter-to-inverter link send data 1 to 8 (slave 4)
Inverter-to-inverter link receive data 1 to 8 (slave 5)
Inverter-to-inverter link send data 1 to 8 (slave 5)
Name
Inverter-to-inverter link receive data 1 to 8 (master)
Inverter-to-inverter link send data 1 to 8 (master)
For manufacturer setting. Do not set.
Possible cause
The same station number is assigned to multiple
inverters.
The station numbers are not consecutive.
The specified number of inverters in the system is
not correct. (Pr.1124 is set to a value equal to or
greater than the value set in Pr.1125.
The connection is half-duplex.
The inverter is not reset after Pr.1124 and Pr.1125
are set.
The PLC function is disabled.
Description
Data 3 to 8 sent to slave 1
Data 4 to 8 received from slave 1
Data 4 to 8 sent to slave 1
Data 5 to 8 received from slave 1
Data 5 to 8 sent to slave 1
Description
Data 1 to 8 received from master
Data 1 to 8 sent to master
Countermeasure
Set Pr.1124 correctly.
Set Pr.1124 so that the station numbers are
consecutive.
Set Pr.1125 correctly.
Use full-duplex connection. (When Pr.1426 Link
speed and duplex mode selection = "0 (initial
value)", check that the hub and the Ethernet cable
are compatible with full-duplex connection.)
Reset the inverter.
Set a value other than "0" in Pr.414 to enable the
PLC function.