Honeywell ESSER IQ8Control C

Fire Alarm Control Panel IQ8Control C / M
48 FB 798951.10.GB0 / 04.15
RS485 interface
An external device, such as an LCD display panel, can be connected to the A/B terminals via the RS485 interface.
A B
RS485
1
external device
BA
+
-
+UBext.
GND
X33
1
2
3
1
2
3
X35
A B
RS485
2
X34
X32
1
2
3
1
2
3
 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.
Fig. 39: RS485 interface
RS 485-1
A/B
Connection interface – total length max. 1000 m
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!
Do not connect terminals!
X33/35
X34