Esser 8000C - Page 129

Fire Alarm Computer 8000C / M
Page 129
Assignment of terminal card RS232 module
☞
Max. cable length for RS 232 is 15 m, recommended cable I-Y (ST) Y 2 x 2 x 0.8
∅
mm
Assignment for terminal card TTY module
If solder jumper BR3 is closed on the module, TTY interface may not be used.
☞
Max. cable length for TTY is 1000 m, recommended cable I-Y (ST) Y 2 x 2 x 0.8
∅
mm
RS 232 / TTY module (serial interfac
e)
1
2
3
4
5
6
7
8
do not use
RxD (receive)
Data GND (potentialfree)
TxD (send)
RxD
TxD
Data
GND
external device
do not use
do not use
do not use
do not use
1
2
3
4
5
6
7
8
do not use
Tx -
Rx +
Tx +
Rx -
send
receive
Rx -
Tx +
Rx +
Tx -
external devic
e
do not use
do not use
do not use
send
receive