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Chapter 3 Connecting Devices to the Network
The steps of configuring the IP addresses of the ControlLogix PLC system, the ICC ETH-1000 module, and the
PLC are documented in this chapter.
3.1 Changing the IP Address of the ControlLogix System
The minimum configuration of a ControlLogix system consists of a ControlLogix chassis (e.g. 1756-A7), a
power supply (e.g. 1756-PA72), a ControlLogix Controller (e.g. 1756-L61), and an EtherNet/IP module (e.g.
1756-ENBT).
The steps here document the procedure to modify the IP address of a 1756-ENBT module to add the
ControlLogix system on the same network with the Mitsubishi PLC and the ICC ETH-1000 module. It is
assumed that there is already an IP address assigned to the ENBT module. If configuring a brand new
ENBT module is necessary, please consult the user manual of the Rockwell ENBT module.
1. Power on the Rockwell system and monitor the display scrolling across the front of the ENBT
module. If the module is working properly, the message “OK Rev x.x.x IP1.IP2.IP3.IP4” should scroll
across the display. Rev x.x.x is the revision number of the module firmware, and IP1.IP2.IP3.IP4
forms the current IP address of the module. For example, the message is “OK Rev 2.3.1
192.168.1.30”
2. Connect a configuration PC on the network. Change the IP address of the PC to be in the same
subnet as the 1756 ENBT module.
• Note: it is assumed that changing the IP address on a PC is known by the users of this
manual. If required, please consult Windows OS Help File.
3. Open the RSLinx Classic on the configuration PC and select Communications -> RSWho and
expand the tree to see the following screen showing the system configuration:
1
Introduction
2
System Overview
3
Devices to the
Network
4
ControlLogix PLC
Project
Configuration
5
ETH-1000
Configuration
6
Using EtherNet/IP
Explicit Messaging
7
Terminology