Pin Assignments - Siemens FS720 Mounting & Installation

Installing, exchanging and connecting modules
6
RS232 / RS485 module

6.19.2 Pin assignments

6.19.2.1 X3 DTE HOST on RS282 module
164 | 222
Building Technologies
Fire Safety
You will find information on connecting the event printer in the chapter 'Event
printer'.
Pin Designation
8 ← DCD
7 ← DSR
6 ← CTS
5 0 V
4 ← RXD
3 DTR →
2 TXD →
1 RTS →
Admissible cable cross-section: 0.2...1.5 mm²
DTE-HOST
DCD
DSR
CTS
0 V
RXD
DTR
TXD
RTS
T Participant with RS232 interface
Description
Data Carrier Detected
Data Set Ready
Clear To Send
Ground
Received Data
Data Terminal Ready
Transmitted Data
Ready To Send
X3
8
7
6
5
T
4
3
2
1
A6V10210390_j_en_--
2015-12-15