X41 / X42 / X51 / X52 Connection Terminals For Module Bus Cards; X14 Ser_Opt1, Rs485 Connection Terminal - Siemens 13-xx-ST-SBT Series Product Data

32 Processor unit (19", FC2080) FCC2002-A1
Pin assignments
32.3.3
32.3.4
190
Building Technologies
Fire Safety
You will find details about signal monitoring and wiring diagrams in the product
data of the power supply (150W).
X41 / X42 / X51 / X52 connection terminals for module bus
cards
The module bus card determines the PIN assignment of the connectors. You will
find the pin assignments in the description of the corresponding module card.
The assignment of the connector is:
Connections of module bus card 4 are on connectors X41 and X42
Connections of module bus card 5 are on connectors X51 and X52

X14 SER_OPT1, RS485 connection terminal

Pin Designation
2 A
1 B
Admissible cable cross-section: 0.2...1.5 mm²
X14
SER_OPT1
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
Description
RS485 line A
RS485 line B
2
Tn
1
*)
T1
!
008837_q_en_--
14.05.2012