Telemetry Interface - Siemens CKA4820 Betriebsanleitung

8.3

Telemetry Interface

Siemens Building Technologies
Fire Safety & Security Products
Pin No. Signal (description)
1 Output TTY output I+
2 Output TTY output I-
3 Input TTY input I+
4 Input TTY input I-
5 Input/output RS485 line "A"
6 Ground External GND
7 Power External V+ (15 V)
supply
8 NC Not used
9 Input/output RS485 line "B"
Table 7: Telemetry interface TTY/RS485 (COM2), 9-pin Sub-D socket
Connections
105
01.2005