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20
Modbus TCP On-Board communications
POWERXL DG1 SERIES VFD
MN040010EN—September 2016 www.eaton.com
Table 38. EtherNet/IP / Modbus TCP—P20.3, continued
Code
Parameter
Min.
Max.
Unit
Default
ID
Note
P20.3.6
Static IP Address
192.168.1.254
1501
P20.3.7
Static Subnet Mask
255.255.255.0
1503
P20.3.8
Static Default Gateway
192.168.1.1
1505
P20.3.10
Connection Limit
0
5
5
609
P20.3.11
Modbus TCP Unit ID
1
610
P20.3.12
Comm Timeout Modbus TCP
ms
10000
611
P20.3.13
Protocol Status
0
612
0 = Stopped
1 = Operational
2 = Faulted
P20.3.14
Slave Busy
0
613
0 = Not Busy
1 = Busy
P20.3.15
Parity Error
0
614
P20.3.16
Slave Failure
0
615
P20.3.17
Last Fault Response
0
616
P20.3.18
Modbus TCP Fault Response
0
1
0
2517
0 = In Fieldbus Control
1 = in all Control
DHCP
PowerXL EtherNet/IP communication supports DHCP for
easier network configuration. Dynamic Host Configuration
Protocol (DHCP) is a network protocol that is used to
configure network devices so that they can communicate
on an IP network. As a DHCP client, PowerXL EtherNet/IP
negotiates with the DHCP server to determine its IP address
and obtain any other initial configuration details it needs for
network operation.
IP address
IP is divided into four parts. (Part = Octet) Default Static
IP Address is 192.168.1.254
Communication timeout
Defines how much time can pass from the last received
message from the client device before fieldbus fault is
generated. Default communication timeout is 10 seconds.
ote:
N
If the network cable is broken from PowerXL EtherNet/
IP port, a fieldbus error is generated immediately.
Static IP address
In most cases the user may want to establish a Static
IP Address for the PowerXL EtherNet/IP based on their
network configuration.
Static IP address default configurations are as defined in
“PowerXL EtherNet/IP network settings” table, provided in
“Connections and Wiring” section.
The user can manually define the network address for the
PowerXL EtherNet/IP as long as all units connected to the
network are given the same network portion of the address.
In these situations the user will need to manually set the
IP Address in the PowerXL by using PowerXL drive keypad.
Be aware that overlapping IP addresses can cause conflicts
between devices on the network. For more information about
selecting IP addresses, contact your network administrator.
Unit identifier
The Unit Identifier used in Modbus TCP is used for the
Modbus protocol in place of the slave address used in
Modbus RTU. This Unit Identifier is used to communicate
via devices such as bridges, routers and gateways that use
a single IP address to support multiple independent Modbus
end units.