Any menu or function available from the front panel controls of a PDM II unit can also be remotely accessed from any computer on the same network using a web browser. There are, however, certain features that are available only through the web GUI.
Note - To avoid duplication, only the items unique to the web GUI will be explained in this section.
Logging Into PDM II from a Connected Computer
Launch your preferred web browser on any Windows, Mac, or Linux computer.
Enter "http://xxx.xx.x.x" where the "x's" are the IP address of the PDM II.
Note - You must set a password in order to access the unit remotely. If you haven't set a password via the front panel, then you will be required to set your password on the initial web page. Enter the password twice, click "Set Password", click "OK" on the dialog that appears, and then continue with the instructions.
Once connected, you will be prompted to enter a Name and Password. Enter "pdmweb" as the user name, and the password that you have set via the front panel or the initial web page. Passwords are case-sensitive.
Port Forwarding and GUI Communication
PDM II's web server connects at the standard http port 80. Once the connection is established, port 5444 is used for the WebSocket connections from HTML5. Both ports must be open and available for the remote GUI to function.
If you are trying to connect to your PDM II over a WAN or across the Internet, you will need to use a NAT router to route ports 80 and 5444 to the unit's local IP address.
If your facility has more than one PDM II, you may want to connect to each of them on the same network using a single external IP address. This can be accomplished with your NAT router and PDM II's built-in port offset feature. The key is to forward pairs of port numbers. For example, using two units we'll call "A" and "B" and using an example IP address of 10.11.12.100:
Configure the ports on your router so that inbound browser traffic on port 81 forwards to port 80, and traffic on port 5445 forwards to port 5444 on unit "A".
Configure the router so that inbound browser traffic on port 82 forwards to port 80, and traffic on port 5446 forwards to port 5444 on unit "B".
To access unit "A" from the outside, enter http://10.11.12:100:81. To access unit "B", enter http://10.11.12.100:82.
Because the ports operate together in pairs, it is only necessary to specify the http port; the WebSocket connection for HTML5 will follow along. The browser will always contact the WebSocket at a port 5360 less than the web page's port.
Be sure to also set any necessary permissions in your firewall.