User`s manual

Watlow EZ-ZONE™ Communications • 29 • Chapter 3 EtherNet/IP

Chapter 3 EtherNet/IP

Introduction to EtherNet/IP

Today, with the introduction of EtherNet/IP (Industrial Protocol), a user can collect, configure, and control

using one protocol. EtherNet/IP is a network communication standard capable of handling large amounts of

data at speeds of 10 Mbps or 100 Mbps, and at up to 1,500 bytes per packet. The specification uses an open

protocol at the application layer.

EtherNet/IP makes use of the standard off-the-shelf Ethernet chip sets and the currently installed physi-

cal media (hardware connections) and incorporates what is known today as the Common Industrial Protocol

(CIP); an open protocol at the application layer fully managed by the Open DeviceNet Vendors Association

(ODVA, http://www.odva.org). CIP is the critical component providing the ability to collect, configure, and con-

trol utilizing both implicit messaging (real-time I/O messaging), and explicit messaging (information/configu-

ration messaging), with full support for peer-to-peer and multi-master configurations.

PM Connectivity over EtherNet/IP

To establish communications with the PLC the EZ-ZONE™ PM controller must be connected to the net-

work, where it will either assume or be given an IP address. There are two ways in which an IP address can

be established: Dynamic Host Configuration Protocol (DHCP, where a DHCP server on the network provides

an IP address); or a fixed IP address (manually entered). The PM controller's default is set to DHCP. To

change the IP addressing method to fixed IP follow the steps below:

1. Push and hold the up and down arrow keys on the front panel for six seconds to go the the Setup Menu.

2. Push the up or down arrow key until [`CoM] (Communications Menu) appears in upper display and

[`SEt] in the lower display.

3. Push the green Advance Key ‰ to enter the Communications Menu [`CoM].

4. Push up arrow key to go to the Communications 2 Submenu. The upper display shows [```2], and the

lower display shows [`CoM].

5. Push the Advance Key ‰ until the upper display shows [dhCP] and lower display shows [iP;M].

6. Push the up arrow to change to Fixed Address

Note: Excessive writes to the PM may cause premature EEPROM failure. For more detail see the section entitled "Saving

Settings to Nonvolatile Memory".