Evening all,
got a keypad display that is acting rather oddly so thought I would check here to see if there is any known problem before I start digging.
The panel is a Pyronics Euro46 with 2 wired keypads, a Euro46 basic one adjacent to the panel for maintenance and a EURO-LCDPZ (the flashier chrome one) by the front door. There is also a zem32 wireless expander on the RS-485 bus.
The problem is that the display on Euro-LCDPZ keypad doesn't just update fairly instantaneously in one goas you would expect, parts of characters update then half a sec later the rest update so if you're flicking through menus lots of bits of characters appear then half a sec and the rest fills in so you can read it. By comparison the other keypad next to the panel updates the display normally.
The odd thing about this is that I set everything up on the bench initially to program it and I don't recall seeing any problem then but it was immediately noticeable on powerup when installed.
Everything actually works fine, no bus errors or other problems, the rs485 bus is cabled in Cat5 and is approx 7m length. It doesnt run parallel to any power cables but crosses one or two. The bus terminations all look ok, there is a 470 ohm resistor terminated both at the keypad and the panel and the cable from this keypad goes through a ferrite core at the panel as per installation manual.
Anyone come across this before?, I am wondering whether noise on the bus could cause this effect as it seemed ok on the bench.
got a keypad display that is acting rather oddly so thought I would check here to see if there is any known problem before I start digging.
The panel is a Pyronics Euro46 with 2 wired keypads, a Euro46 basic one adjacent to the panel for maintenance and a EURO-LCDPZ (the flashier chrome one) by the front door. There is also a zem32 wireless expander on the RS-485 bus.
The problem is that the display on Euro-LCDPZ keypad doesn't just update fairly instantaneously in one goas you would expect, parts of characters update then half a sec later the rest update so if you're flicking through menus lots of bits of characters appear then half a sec and the rest fills in so you can read it. By comparison the other keypad next to the panel updates the display normally.
The odd thing about this is that I set everything up on the bench initially to program it and I don't recall seeing any problem then but it was immediately noticeable on powerup when installed.
Everything actually works fine, no bus errors or other problems, the rs485 bus is cabled in Cat5 and is approx 7m length. It doesnt run parallel to any power cables but crosses one or two. The bus terminations all look ok, there is a 470 ohm resistor terminated both at the keypad and the panel and the cable from this keypad goes through a ferrite core at the panel as per installation manual.
Anyone come across this before?, I am wondering whether noise on the bus could cause this effect as it seemed ok on the bench.