Configuration Parameters for IP Addresses

Introduction

This zone allows the IP address of a module to be defined in three distinct ways:

either using a default configuration
by manual configuration
or by using a configuration supplied by a server device

Default IP Address

Selecting the IP Address by default field allows the module's IP address to be calculated from the code selectors.

In this instance, you must code the network and station numbers on the code selectors located on the front of the module.

With this coding, the IP address is automatically derived by the system and the IP Address, Subnetwork mask, and Gateway Address fields are not significant and are grayed out.

NOTE: The default parameters should not be selected when the module is connected to a closed or private network.

Configured IP Address

Selecting the Configured field allows manual configuration according to your own requirements:

module IP address
the subnetwork mask, which defines the part allocated to the subnetwork identifier in the IP address
the IP address of the default gateway, to which messages for other networks are transmitted

NOTE: If the module is connected to an existing TCP/IP network, the IP addresses are administered globally, therefore the IP parameters must be configured. Otherwise there is a risk of disturbance on the existing network caused by possible double allocation of the IP addresses.

Dynamic Modification

You can change the IP parameters (IP address, subnet mask, and default gateway) of the ETY module with the SEND_REQ function block. (Refer to the Control Expert Communication Block Library documentation.) The dynamic Ethernet address function enables an ETY module (configured in a Unity 2.0-compatible PLC application) to dynamically assign itself new IP parameters.

The Premium ETY module’s dynamic Ethernet address facility allows you to:

install a single common PLC application into multiple physical installations, reducing the need for multiple copies of similar programs or rebuilding the application for each location that uses a new IP address
use the PLC application code to assign an IP address and associated parameters to an ETY

To ensure that the ETY module is ready for operation, allow the PLC to run (in run mode) for 15 seconds after the last stop mode before issuing the SEND_REQ function. After the user issues the CHANGE IP PARAMETERS command and the ETY module accepts the new parameters, the ETY module resets and begins operations with the new parameters.

NOTE: FDR clients that use the ETY module for a server must be rebooted after the ETY's IP address change is completed. Otherwise, these FDR clients can not update their parameter files on the FDR server (the ETY module).

NOTE: Constant words contain the original configuration parameters, not those that were updated after the IP address change.

NOTE: You can see the new configuration (IP parameters, subnet mask, and gateway address) in the Control Expert ETY debug screen. You can also see the newly assigned IP address in the Ethernet Module Statistics web page, however, you must be aware that the IP Address, Subnetwork mask, and Gateway data on this page reflect the old configuration.

Refer to the example for changing IP parameters with SEND-REQ.

Client/Server Configuration

Selecting the Client/Server configuration field allows the module's IP address to be configured from a remote device acting as a BOOTP server.

In this instance, the IP address, Subnetwork mask and Gateway Address fields are not significant and are grayed out.