plc assignment of ip

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In this week’s episode of The Automation Show, we take a look at how you set the IP Address of a new Siemens S7-1200:

For more information, check out the “show notes” located below the video..

The Automation Show, Episode 16 Show Notes:

Related Articles:

• How To Activate TIA Portal Step 7 Using A USB License (article)
• Siemens PLC and HMI Starter Kit (video)

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Shawn M Tierney Technology Enthusiast & Content Creator

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Great video: short; sweet; to the point. Also I just went through the same thing with the License on the USB.

Actually, it’s kind of funny: the TIA software turned you into Shawn the DHCP server. Of course the direction of the initial query in the process is reversed so you’re not a server in the canonical client-server paradigm, but after that the process is functionally the same.

Nice observation Dr!

Shawn Tierney, Instructor at The Automation School

Join my free community to follow along! You can also become a member and support our work at: Automation.Locals.com

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How to Find Allen Bradley PLC IP Address: Quick and Simple Steps

Finding the IP address of an Allen Bradley Programmable Logic Controller (PLC) is a crucial task for industrial automation professionals. It enables seamless communication between a PLC and other devices on an Ethernet/IP network. In this article, you will discover effective methods on how to locate the IP address of an Allen Bradley PLC.

Whether you're troubleshooting connectivity issues, setting up new equipment or modifying an existing system, having the knowledge to locate a PLC's IP address can significantly improve efficiency in industrial automation systems. Delve into this guide to gain a deeper understanding of the necessary steps and tools required to locate the vital information you need for your Allen Bradley PLC system.

Understanding Allen Bradley PLCs

Allen Bradley, a product line of Rockwell Automation, has been a major player in the automation industry since the invention of the original Programmable Logic Controller (PLC) in the 1970s. With a flexible and scalable approach, Allen Bradley's programmable automation controllers (PACs) meet various application requirements, from simple to complex systems (Rockwell Automation) .

Allen Bradley PLCs are designed to handle different industry needs, such as process control, safety, and motion applications. The PLC's primary function is to execute a set of instructions by receiving input signals, processing them, and sending output signals to control other devices. Some popular series of Allen-Bradley PLCs include Micro800, CompactLogix, ControlLogix, and SLC 500.

When working with Allen Bradley PLCs, it is essential to know their IP addresses for configuring and implementing an Ethernet-based communication system. The IP address enables communication between the PLC and other devices, such as Human-Machine Interfaces (HMIs), remote I/O modules, and other controllers (PLCS.net) .

Each PLC has its specific software for programming and monitoring, such as RSLogix 5000 for ControlLogix and CompactLogix controllers, and RSLogix 500 for SLC 500 and MicroLogix controllers. Additionally, tools like RSLinx are utilized for communication setup and management, which helps maintain the EtherNet/IP connections among various devices (PDF Supply) .

Gathering Necessary Tools and Software

Before you begin the process of finding the IP address of your Allen Bradley PLC, it's essential to gather the necessary tools and software. This preparation ensures a smooth workflow and reduces the chance of running into difficulties during the process.

First, you'll need a computer with a compatible version of RSLogix 5000 or Studio 5000 software installed. This powerful software enables you to communicate with and configure Allen Bradley PLCs, including setting and discovering IP addresses. If you don't already have this software, you can download it from the Rockwell Automation website.

Next, gather the necessary hardware to connect your computer to the PLC. In many cases, this involves using an EtherNet/IP network cable. However, some models may require a serial or USB connection. Ensure that you have the appropriate cables and adapters for your specific Allen Bradley PLC.

With the software and hardware ready, follow these steps to configure your computer's network settings:

• Identify the subnet used by your PLC to prevent IP address conflicts.
• Configure your computer's network card settings to match the PLC's subnet, based on the PLC's documentation.

Now you're all set with the necessary tools and software, and your computer is configured properly to communicate with the Allen Bradley PLC.

Step by Step Process to Find IP Address

Before you begin the process of finding the IP address for your Allen Bradley PLC, ensure your PC and PLC are properly connected using an Ethernet cable. You can typically find the Ethernet port on the PLC's front.

Firstly, download and install the Rockwell Automation BootP DHCP software on your computer. This software will enable you to discover and assign IP addresses to your PLC without any hassle. Follow these steps once the software is installed:

• Launch the Rockwell Automation BootP DHCP software on your computer. You can find it by accessing Start Menu > Rockwell Software Packages > BOOTP/DHCP .
• Power on your Allen Bradley PLC. After a few seconds, your PLC will start requesting an IP address, which will be displayed in the BootP DHCP Server software.
• Right-click on the device's MAC address in the software and choose "Add to Relation List."
• Now, select the added device in the relation list and click on the "Disable BOOTP" button. This will allow you to assign a static IP address to the PLC.
• Enter the desired IP address, subnet mask, and gateway for the PLC.

At this point, it is recommended to power cycle your PLC to ensure the IP address has been saved. To verify the IP address, you can use free software tools like Advanced IP Scanner or use your computer's built-in command prompt.

Keep in mind that your PC's IP address should be in the same subnet as the PLC for proper communication. Once you have successfully assigned and verified the IP address, you can proceed to set up the communication parameters in the Rockwell Studio 5000 software or any other program you're using to interface with the PLC.

Troubleshooting Common Issues

Finding the IP address of an Allen Bradley PLC can sometimes be met with challenges. One way to troubleshoot common issues is by using the RSLinx software paired with the Ethernet/IP communications driver (Automation Ready Panels) . This combination allows you to access and view PLC information, including the IP address.

Some frequent issues and their solutions include:

• PLC not detected: If the PLC isn't showing up in RSLinx, ensure it is connected with an appropriate Ethernet cable, the software configuration is correct, and check the network settings on your computer.
• Incorrect IP configuration: If you are unable to communicate with the PLC, confirm the IP address and subnet mask of the PLC and your computer are compatible (Ethernet Troubleshooting YouTube Video) . Adjust network settings if needed.
• Changing IP address: If you need to set a different IP address for a new Allen Bradley PLC, try using the BOOTP/DHCP tool (SolisPLC tutorial) . Follow the provided steps to properly assign the desired IP address.

Remember to consult the manufacturer's documentation or reach out to their support team for assistance when encountering issues specific to their products (Rockwell Automation documentation) . With careful troubleshooting and attention to detail, you'll be able to resolve most Allen Bradley PLC IP address issues efficiently.

In this article, we have explored the process of finding the IP address of an Allen Bradley PLC. Identifying the IP address is crucial for connecting to and configuring the PLC for various tasks. There are several techniques available for discovering the IP address, including the BOOTP/DHCP method as explained in Solis PLC .

Taking advantage of network scanning tools and software is another approach to uncover the critical information for PLC communication. Emphasis should be placed on accuracy and security when employing these methods, as they are vital for maintaining the integrity of the PLC network and the devices connected to it.

To summarize:

• Locate the IP address of the Allen Bradley PLC with the appropriate tools and techniques, such as BOOTP/DHCP.
• Utilize network scanning tools to discover device information and make the process easier.
• Maintain accuracy and security while handling PLC networking and configuration.

By following these steps, you can effectively establish communication with your Allen Bradley PLC and ensure that the systems connected to it perform optimally.

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Fastest way to change devices Profinet IP addresses?

Created by: icetea at: 8/22/2019 11:42 pm (3 replies), rating (1) thanks 0, all about communication / networks, presales info, catalog and ordering system online, technical info, contact & partners, follow us on.

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Can't change IP address of PLC

Good morning.

Received the PLCnext starterkit this week, did some research on some topics beforehand.

One being the IP address and how to change it, I've tried this makers blog  which gave problems with profinet stack and thus the PLC not booting at all.

Also tried the suggestion in this post , whenever I 'write' the IP parameters where I changed the assignment to DHCP, and read the parameters again it will jump back to static...

Have to say I did manage to change the IP address through the online parameters once, only was the static IP I had setup out of range on the project IP range so that didn't work.

I'm kind off out of ideas at the moment, would appreciate some help or comment on what's going wrong.

Kind regards,

I hope I can help.

• What LEDs do you see on the PLC? In order to set the IP address from PLCnext Engineer, the RUN LED must be solid green on the PLC.
• In the PLCnext Engineer "help" system, there is a page titled " Quickstart: Overview on Engineering Steps ". On that page there is a section on " IP configuration ", which describes how to set the IP address from within PLCnext Engineer. If this does not work for you, can you tell us at what point in this procedure the problem occurs?

EDIT: There is also a section in the PLCnext Technology Info Center that explains how to assign the IP address to a PLC using PLCnext Engineer: https://www.plcnext.help/te/PLCnext_Engineer/Connecting_to_the_controller.htm

Regards, Martin.

Thank you for your reply.

The 'run' and 'D' led are both green, 'BF-D' is flashing red. 

I have tried both methods from the Help quickstart.

I can't seem to edit the IP address in the 'Online devices' tab, see below picture.

The offline methode also doesnt work, since the IP I want to give the PLC is outside the standard range.

When I change the range on the project page I can't access the PLC anymore.

OK, so that screen shot looks good.

You can change the range of valid IP addresses in the main "Project" page - just select the "Settings" tab you can see in the screen shot above.

After setting the address range to a range that suits you, change the IP address of the PLC in the project.

Then, you can transfer the offline IP address information to the online PLC, from the window in your screen shot above. When you press the Search button in the "Online Controllers" tab, the PLC will appear with the "old" address details.

OK, so that screen shot looks good. You can change the range of valid IP addresses in the main "Project" page - just select the "Settings" tab you can see in the screen shot above. After setting the address range to a range that suits you, change the IP address of the PLC in the project. Then, you can transfer the offline IP address information to the online PLC, from the window in your screen shot above. When you press the Search button in the "Online Controllers" tab, the PLC will appear with the "old" address details.

Not quite sure why, but this somehow worked now!

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• BC9020, BC9050 and BC9120 | Bus Terminal Controller for Ethernet

Setting the IP address

The IP address can be set using four different procedures, and these will be described in more detail below.

BX9000: The addressing method is specified via a navigation switch and the display or via the TwinCAT configuration.

*) BX9000 from firmware version 1.20

• Address Configuration via TwinCAT System Manager
• Setting the address via BootP server
• Setting the address via DHCP server
• Auto IP address
• Subnet mask