Communication between panels

[subathra]

 
The fire alarm system we have four fire alarm panels and one repeater panel. The networking is available between panel 1 , panel 2 and repeater panel here the fault is non availability of networking between repeater panel ,panel 3 & panel 4.
 
Please note that, the cable continuity is available between  repeater panel, panel 3 & panel 4 but its not communicating. Please advise us to rectify the problem.

The distance between each panels will be 500 to 600mtrs. The networking cables all also in good condition.
Pls suggest us the main causes of the problem.

[briac]

hi Subathra,
the communication should start by greeting,

can you mention the fault shown on the panel ?
download fist all the panel in the same database before you connect it;
the length of the cable seems quite long,
then try to reduce the speed of the communication(baudrate) t the minimum.

regards,

[Leo]

try swapping the rs485 cards

this post maybe helpful
http://www.thealarmtech.com/forum/viewt ... ?f=5&t=631

remember it is just RS485 communication between panels
http://www.thealarmtech.com/forum/viewt ... f=42&t=483