Honeywell ESSER IQ8Control C Installation Instruction page 48

Fire Alarm Control Panel IQ8Control C / M
RS485 interface
An external device, such as an LCD display panel, can be connected to the A/B terminals via the RS485 interface.
A
RS485
-
+
A
external device
Fig. 39: RS485 interface
RS 485-1
Connection interface – total length max. 1000 m
A/B
X32 closed  RS 485 termination resistance activated
open  RS 485 termination not activated
RS 485-2
A/B
Do not alter position of the jumpers!
X33/35
Do not connect terminals!
X34
48
X33 X35
1 1
2 2
3 3
X34
X32
1 1
2 2
3 3
B A B
RS485
1 2
B

The RS485 BUS must be connected with an
EOL resistor at both ends of the loop.

If the FACP incl. basic module is the last
device on a loop end, the integrated EOL
resistor can be activated with the X32
jumper.
FB 798951.10.GB0 / 04.15