Esser 8000C - Serial Interface

Fire Alarm Computer 8000C / M
Page 89
10.3 Serial interface
A
B
A
RxD
TxD
B
external device
Rx -
Rx +
Tx -
Tx +
send
receive
TTY
receive
send
These four terminals may be used for connecting a
n
external device, e.g. a protocol printer, via the TT
Y
interface (20 mA).
The cable length between external device an
d
interface must not exceed 1000m.
If wired correctly, the green LED V56 will blink at th
e
transmission frequency to provide visual indication o
f
proper interface wiring.
If the connection cables are transposed at th
e
terminals, red LED V 44 will light up.
The connection terminals A/B of the RS485 interface on the basic module are reserved for future
function extensions and are not supported on this version of the central unit.
A
B
RS485
RS485 interface
not for FACP 8000 C / M
Basic modu
le