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Disclaimer: This document is written in the hope that you can utilize for your own education to gain knowledge of PLC systems (should you decide to utilize this document). Although I believe the information in this document to be accurate, it is YOUR responsibility to verify this information before implementing it in any way, especially when damage to personnel or equipment could result. By continuing to read this document, you agree to hold no one who writes, modifies, or distributes this document liable in any way (even negligence). Due to the wide variety of plant applications, some of the examples in this document may be prohibited at your location, or could cause damage to equipment, or harm personnel.
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Author: Ricky Bryce (Montgomery County, IL)
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RSLinx -- Utilizing the BootP/DHCP Server


  1. Write down the Ethernet Hardware Address of the device you wish to configure. This is also called the MAC address. Here is an example of a hardware address:

00:00:BC:1E:98:D9


  1. Run the BootP/DHCP utility. You can access this utility if it is installed by clicking Start | Programs (or All Programs in Windows XP)| Rockwell Software | BootP/DHCP Server | BootP DHCP Server.



  1. Once the server is open, it may as for some specific network information if this is the first time the BootP server has been run. You can obtain this information from your network administrator. For this example, we just set the subnet mask to 255.255.255.0 then click OK.


  1. Power up your processor, and you should see the ethernet device begin to request and address.



  1. Double click on the device. You will then be prompted to assign an IP address to the device. Be sure you double click the right device. Entering an IP address into the wrong equipment could have disastrous consequenses.



  1. You could also enter a host name and description at this time if you wish.


  1. If you wish to verify communication, you can ping the device from the command prompt. By default, the command prompt can be accessed from Start | Programs | Accessories | Command Prompt.




You should get replies. To ping continuously, use the -t flag after the ping command. A control-C will stop the ping command.