Guys, Many thanks that was a great pointer.
I didn't realise there was a virtual keypad (makes sense though)
I thought the address of 51 was a bit odd. I have six keyprox's on 1-00, 1-01, 1-02, 2-00, 2-01 & 2-02 so confused the heck out of me.
I pulled the serial cable as this is linked to an...