Mitsubishi Electric 800 Series Instruction Manual page 57

NOTE
• The monitor items and parameter settings can be read during communication with the Pr.1432 Ethernet communication
check time interval = "0 (initial value)" setting, but such operation will become faulty once the operation mode is changed to
the NET operation mode. When the NET operation mode is selected as the start-up operation mode, communication is
performed once, then an Ethernet communication fault (E.EHR) occurs.
To perform operation or parameter writing via communication, set Pr.1432 to "9999" or a value larger than the communication
cycle or retry time setting. (Refer to
 Ethernet function selection (Pr.1427 to Pr.1430)
To select MODBUS/TCP for the application, set "502" in any of Pr.1427 to Pr.1430 Ethernet function selection 1 to 4. (Refer
to page 122.)
 Ethernet IP address for command source selection (Pr.1449 to Pr.1454)
• To limit the network devices that send the operation or speed command through the Ethernet network, set the range of IP
addresses of the devices.
• When Pr.1449 to Pr.1452 = "0 (initial value)", no IP address is specified for command source selection via Ethernet. In this
case, operation commands cannot be sent via Ethernet.
• The setting range for command source selection depends on the settings in Pr.1451 and Pr.1453, and Pr.1452 and
Pr.1454. (Either of the settings can be larger than the other in Pr.1451 and Pr.1453, and Pr.1452 and Pr.1454.)
[Setting example 1]
Ethernet IP address
for command source selection
Command source selection range setting
for the Ethernet IP address
In this case, the IP address range for command source selection via Ethernet communication is
"192.168.x (1 to 3).xxx (100 to 150)".
[Setting example 2]
Ethernet IP address
for command source selection
Command source selection range setting
for the Ethernet IP address
In this case, the IP address range in which Ethernet communication is permitted is "192.168.2.xxx (50 to 100)".
• When "9999 (initial value)" is set in Pr.1453 or Pr.1454, the range is invalid.
NOTE
• When four or more clients attempt a connection to the inverter, the connection attempted from outside of the IP address range
set for Ethernet command source selection will be forced to be closed in order from the oldest.
 Ethernet communication check time interval (Pr.1432)
• If a signal loss (communication stop) is detected between the inverter and all the devices with IP addresses in the range
for Ethernet command source selection (Pr.1449 to Pr.1454) as a result of a signal loss detection, a communication error
(E.EHR) occurs and the inverter output will be shut off.
• When "9999" is set in Pr.1432, the communication check (signal loss detection) will not be performed.
• The monitor items and parameter settings can be read via Ethernet when "0" is set in Pr.1432, but a communication error
(E.EHR) occurs instantly when the operation mode is switched to the Network operation.
56
2. Ethernet Communication
2.7 MODBUS/TCP
page 56.)
Pr.1449 Pr.1450 Pr.1451
192 168
The range is between
the values set in both
parameters.
Pr.1453
― ―
Pr.1449 Pr.1450 Pr.1451
192 168
The range is between
the values set in both
parameters.
Pr.1453
― ―
Pr.1452
1 100
The range is between
the values set in both
parameters.
Pr.1454
3 150
Pr.1452
2 100
Pr.1454
9999 50