Jump to content

HMI & CPU IP Addresses


Recommended Posts

Quick question that I've been asked about a few times by clients and other controls engineers that I have a 'hard time' answering.

We assign an IP Address to both the CPU and the HMI but we only ever use the HMI Address for anything such as MODBUS/TCP communications, VNC, FTP, etc.

What's the purpose of the CPU IP Address if we never use it for anything?  

It' nice that the 2 ports are actually into a switch but if we can't really use the other IP Address then what's it for?

This tends to come up when we need to communicate/access the PLC over different networks.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...