Wiring Principle - Siemens FC700A Hardware Description

12.3

Wiring principle

FC700A
Housing H38
B3Q700 (CPU)
ST2
Housing H28
FT700A
B3Q700
ST2 F20A020
12.4 Key data
12.5 Connections
E3I020
unused
(transmit) TXD1
(receive) RXD1
RS232-1
Module chassis
(Printer)
(ground 1) 0V1
(transmit) TXD2
(receive) RXD2
RS232-2
extended
functions
(SWE700A)
(ground 2) 0V2
Siemens Building Technologies
Fire & Security Products
E3I020
F20A140 ST1
Mounting accessories Z1B020
E3I020
ST1
Operating voltage
Quiescent current increase B3Q700 when operat-
ing one E3I020
X3
Terminal block
1
2
3
4
5
6
7
8
Connector ST2
12 9
11 10
10 11
(connect to chassis
ground)
9 12
8 13
7 14
6 15
RTS2
5 16
CTS2
4 17
TCLK2
3 18
RCLK2
2 19
CD2
1 20
Depending on type of modem the signals 'RTS/CTS' must not be wired
X3
1
RS232-1
RS232-2
20
Plug-in terminals from Z1B020
ST2
12
RS232-1
RS232-2
1
5V from B3Q700 via flat cable F20A...
25mA (increase on 24V-side)
e.g. printer
1
6
Sub-D connector
(DB9) with cable
TXD
3
RXD
2
RTS
7
CTS
8
GND
5
E3I020 RS232 module
Printer
Modem
Printer
Modem
14
1
Sub-D connector
or
(DB25) with cable
TXD
2
RXD
3
RTS
4
CTS
5
GND
7
007831_a_en_--.doc
Modem
49
03.2004