Modular Fire Panel Installation | en 117
Bosch Sicherheitssysteme GmbH System Description F.01U.028.089 | 8.0 | 2011.07
4.9.8 IOS 0020 A 20 mA Communication Module
The 20 mA communication module has an S1 interface, an RS232 interface (e.g. for
connecting a printer) and an S20 interface (20 mA). The FAT 2002 Fire Service Display Panel
or the THP 2020 A Thermal Printer is connected to the S20 interface. The Plena Voice Alarm
System can be connected via the RS232 interface.
Figure 4.69 IOS 0020 A 20 mA Communication Module
Assignment of DSUB 9 Plug
Figure 4.70 DSUB 9 plug
The technical data can be found in Section 7.5.7 IOS 0020 A 20 mA Communication Module,
page 161.
Labeling Connection
S1 IN | S1 OUT S1 interface
TX - | TX + | RX + | RX - S20 interface (20 mA interface)
AUX - | AUX + Power supply +24 V DC/max. 1.3 A
RXD | TXD | GND RS232 interface
PIN no. Connection
2TxD0
3RxD0
5GND
5 4 321
9
8
7
6
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