Unable To Establish Ethernet Communication - Mitsubishi Electric 800 Series Instruction Manual

2.6.14 Unable to establish Ethernet communication

Check
point
The Ethernet cable has a break.
Excessive electrical noise is present
Wiring around the inverter.
The FR-A8NC E kit is installed when CC-
Link IE TSN or CC-Link IE Field Network
Basic is used for communication.
Communication protocols that cannot be
used together are selected.
The Pr.1432 setting is too small when
CC-Link IE Field Network Basic,
MODBUS/TCP, BACnet/IP, or EtherNet/
IP is selected.
When the CC-Link IE Field Network
Basic is used, the timeout period set in
the master is shorter than the period
during which the inverter does not
Parameter receive the data addressed to the own
setting station.
When the CC-Link IE Field Network
Basic is used, the status bit of the cyclic
transmission addressed to the own
station is OFF.
When CC-Link IE Field Network Basic,
MODBUS/TCP, BACnet/IP, or EtherNet/
IP is used, IP addresses of other
inverters are included in the Ethernet IP
address range set for command source
selection.
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2. Protective Functions
2.6 Check first when you have a trouble
Possible cause
Check that the Ethernet cable is connected to the Ethernet connector properly and
the Ethernet cable is not damaged.
When excessive noise occurs around the inverter, change the communication
setting of the master. (The noise may be reduced by setting a shorter timeout period
or increasing the number of retries in the communication setting of the master.)
Remove the FR-A8NC E kit.
Check the settings of Pr.1427 to Pr.1430. (Refer to the FR-E800 Instruction Manual
(Communication).)
Set a larger value in Pr.1432.
When the CC-Link IE Field Network Basic is used, set a timeout period longer than
the period during which the inverter does not receive the data addressed to the own
station.
When the CC-Link IE Field Network Basic is used, turn ON the status bit of the cyclic
transmission addressed to the own station.
When CC-Link IE Field Network Basic, MODBUS/TCP, BACnet/IP, or EtherNet/IP
is used, do not include IP addresses of other inverters in the Ethernet IP address
range set for command source selection.
Countermeasure