Pin Assignments; X2 Connector - Siemens 13-xx-ST-SBT Series Product Data

14.3
14.3.1
Building Technologies
Fire Safety

Pin assignments

X2 connector

Pin Designation
4 RS485_A
3 RS485_B
2
1
Admissible cable cross-section: 0.2...1.5 mm²
X2
RS485_A A
RS485_B B
T1 First participant
Tn Last participant
*) Stub lines must not exceed 20 m!
Consider the polarity A, B!
Terminate the line after the last participant (Tn) with 120
RS485 module (isolated) FCA2002-A1
Description
Line A
Line B
Not connected
Not connected
4
Tn
3
2
*)
1
T1
14
Pin assignments
!
95
008837_q_en_--
14.05.2012