PLC/HMI connection to the Internet
PLC/HMI connection to the Internet
(OP)
I am working on an application to connect GE Cimplicity HMI with a web server option to the Internet for remote control of an industrial process. I am interested in advice that anyone has on the following:
1. Options for connecting to the Internet. I have looked at dial-up (need a static IP I think) and DSL/ISDN/Broadband (a bit expensive).
2. I believe that all I need is a connection (most likely will use DSL), a router/firewall, and the web server. Is that it??
3. Options for connecting small PLC's or HMI's to the Internet. This isn't an application that warrants an expensive high bandwidth connection yet I need 24x7x365 connectivity. Most of the connection plans offer web hosting, email, etc that I do not need. Do any ISP's provide cheaper plans with just connection to the Internet?
1. Options for connecting to the Internet. I have looked at dial-up (need a static IP I think) and DSL/ISDN/Broadband (a bit expensive).
2. I believe that all I need is a connection (most likely will use DSL), a router/firewall, and the web server. Is that it??
3. Options for connecting small PLC's or HMI's to the Internet. This isn't an application that warrants an expensive high bandwidth connection yet I need 24x7x365 connectivity. Most of the connection plans offer web hosting, email, etc that I do not need. Do any ISP's provide cheaper plans with just connection to the Internet?





RE: PLC/HMI connection to the Internet
Seeing that you'd like to keep this as inexpensive as possible, I'd "VNC" into a PC on your private network then run diagonstics from there.
You can download VNC viewer and server for free from www.realvnc.com
(you will need broadband and static IP, but no web server. This is a remote desktop service)
Regards
RE: PLC/HMI connection to the Internet
I do have a PC in the system. It runs an HMI package with a built in web server. I have been using PC Anywhere to dial in to the PC for remote access and could use VNC if I had a broadband connection.
What I am hoping to find is a service provider that can provide an inexpensive ($30-40/month) always on connection with a static IP so I can publish pages from the HMI's web server.
The client just can not afford a broadband ($70-90/month) connection and does not really need fast performance. We are just trying to post the status of a of couple analog points for remote viewing via the Internet.
Any thoughts?
RE: PLC/HMI connection to the Internet
Does your client have an internal LAN that you could tap into?
RE: PLC/HMI connection to the Internet