Technical Bulletin

Modbus TCP On-Board Communications
PowerXL DG1 Series VFD MN040010EN—May 2014 www.eaton.com 19
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 10seconds.
Note: 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.
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
P20.3.9 Connection Limit 0 2 2 609
P20.3.10 Modbus TCP Unit ID 1 610
P20.3.11 Comm Timeout Modbus TCP ms 2000 611
P20.3.12 Protocol Status 0 612 0 = Stopped
1 = Operational
2 = Faulted
P20.3.13 Slave Busy 0 613 0 = Not Busy
1 = Busy
P20.3.14 Parity Error 0 614
P20.3.15 Slave Failure 0 615
P20.3.16 Last Fault Response 0 616
Table 36. EtherNet/IP / Modbus TCP—P20.3, continued
Code Parameter Min. Max. Unit Default ID Note