Connecting Powermax to Vera 3 using USB to TTL Serial Console cable

Apps & Remote Access Unmaintained
#1

I have an old Visonic Powermax alarm panel: http://www.visonic.com/Data/Uploads/PowerMax_English_User_Guide_DE5450U7.pdf

I want to connect this panel to my Vera 3. On the back of this unit, it has a 4 pin connector (please see attached photo). I believe just like the new Powermax panels, only 3 pins are used: TXD, GND, and RXD. And looking at the photo, indeed only 3 pins are connected to the board.

I bought this USB to TTL serial console cable from ebay: http://www.ebay.com/itm/121191683482

Thing is, I do not know the pin out of the Powermax panel to connect the above cable. Anyone know it? I also just noticed that it says “RS-232” on the panel…and the cable I bought is TTL which is 3.3volts. Will this work instead of purchasing the Powermax RS232 module, which is much more expensive and very hard to find?

Thanks!

#2

Did you ever get this working? I have the same (per your PDF linked) Powermax panel as you do, and just picked up a Veralite, and am wanting to know if I am able to interface with the panel or not.

Thanks.

#3

Unfortunately, I haven’t had the opportunity to try it out yet.

#4

Ah, bummer, I hoping not to have to upgrade my panel (happy with it), but cannot find the 4-pin rs232 adapter for the original powermax anywhere, and hoping to roll my own solution if need be.