PV550 Download and upload program

[Ken Roach]

The Data Highway Plus (DH+) protcol is not based on RS-485 or RS-422 or any other common multi-drop serial data link layer. It is a proprietary two-wire differential signaling network.

While DH+ and DH485 have similar names and similar functions and even share some command codes, they are physically completely different. Any DH+ equipment you have will not connect to that PanelView terminal.

 

[smallsharp]

Thanks Ken and Mickey, Your's reply very help for me. I will buy 1747-UIC or a CF card and PCMCIA-CF holder.