text: <s>[INST] 843ES CIP-Safety configuration issue Hi All, I'm new to Rockwell products, hope this is the right forum to post the issue. With one of my customers, we're struggling to configure an 843ES encoder, here are the details. IP/DHCP configuration Our network configuration does not allow the default 192.168.1.xxx subnet of the 843ES encoder, therefore we have to revert to DHCP configuration. We tried the BOOTP/DHCP EtherNet/IP Commissioning Tool and the EtherNet/IP™ Address Commissioning Tool but it was not possible to use neither of those since they conflict with Windows svchost process on port 67. So, the only way we could enforce DHCP addressing was to set the rotary switches to 999. In this case, the encoder correctly acquired the IP address from our router. Is this the correct way to enable DHCP? Encoder configuration With DHCP enabled, the Module Status Indicator LED on the encoder flashes green/red, that is Device not configured. Chapter 5 Configure the Encoder with Studio 5000 Environment of 843-um001_-en-p.pdf states that The encoder does not work until it has been configured with at least the default configuration.. This chapter describes the encoder configuration using Studio 5000 suite. Two questions: Studio 5000 has many possible variants and configuration, what is the minimal required for configuring the 843ES? In our project we're not using a Rocwkell controller; Is it possible to configure and run the 843ES without Studio 5000? Thank you in advance for your attention, Ezio [/INST] Hello Ezio to answer your 1st question, yes ! setting BOOTP/DHCP you must Set the rotary dials to 999, and use RSlinx Classic. Refere to the Capter 4 of the 843ES User Manual. Now regarding the point that you are not using a Rockwell controller and environment, that is a problem. This device use Add On Profile in Studio 5000 to be configured and to sync with the CIP Safety protocol and Controller. So I'm almost (99%) sure that what you are trying to achieve is not possible in the actual situation (But I will double check) What is your application needs and objectives regarding this encoder? Does your environment support CIP Safety protocol? regards \\n </s>