Parameters Related To Modbus/Tcp - Mitsubishi Electric 800 Series Instruction Manual

• A signal loss detection is made when any of 0.1 s to 999.8 s is set in Pr.1432. In order to enable the signal loss detection,
data must be sent by connected devices at an interval equal to or less than the time set for the communication check. (The
inverter makes a communication check (clearing of communication check counter) regardless of the station number setting
of the data sent from the master).
• Communication check is started at the first communication when the inverter operates in the Network operation mode and
the command source is specified as communication via the Ethernet connector.
Example) When Pr.1432 = 0.1 to 999.8 s
Operation mode External
Connected device
Inverter
Inverter
Connected device
Pr.1432
Communication
check counter
E.EHR
LF
2.7.3

Parameters related to MODBUS/TCP

The following parameters are used for MODBUS/TCP communication. Set the parameters as required.
Pr. Name
1426
Link speed and duplex mode
*1
selection
N641
1442
Ethernet IP filter address 1
*1
N660
1443
Ethernet IP filter address 2
*1
N661
1444
Ethernet IP filter address 3
*1
N662
1445
Ethernet IP filter address 4
*1
N663
1446
Ethernet IP filter address 2
*1
range specification
N664
1447
Ethernet IP filter address 3
*1
range specification
N665
1448
Ethernet IP filter address 4
*1
range specification
N666
*1 The setting is applied after an inverter reset or next power-ON.
 Communication speed and full-duplex/half-duplex selection (Pr.1426)
Use Pr.1426 Link speed and duplex mode selection to set the communication speed and the full-duplex or half-duplex
system. If the operation is not performed properly in the initial setting (Pr.1426 = "0"), set Pr.1426 according to the
specifications of the connected device.
Communication
Pr.1426 setting
speed
Automatic
0 (initial value)
negotiation
1 100 Mbps
2 100 Mbps
3 10 Mbps
4 10 Mbps
Network
Check starts
OFF
OFF
Initial
Setting range
value
0 0 to 4
0
0
0 to 255
0
0
9999
9999 0 to 255, 9999
9999
Full-duplex/half-
duplex system
The communication speed and the communication mode (half-duplex/full-
Automatic duplex) are automatically negotiated to ensure the optimum setting. To set
negotiation automatic negotiation, auto negotiation setting is required also in the master
station.
Full duplex —
Half duplex —
Full duplex —
Half duplex —
Fault (E.EHR)
ON
ON
Setting range
Set the communication speed and the communication
mode (full-duplex/half-duplex).
Set the range of connectable IP addresses for the network
devices.
(When Pr.1442 to Pr.1445 = "0 (initial value)", the function
is invalid.)
Remarks
2. Ethernet Communication
Time
10
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2.7 MODBUS/TCP
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