User Manual

Siemens Building Technologies CE1N5364E / 09.11.1998
Landis & Staefa Division 3/4
5364G01
SERVICE
RELAY
Following connection terminals are used:
Section, block Terminal Device, signal, function
M-bus
+
–
M-bus connection to the M-bus
terminal devices
RS-232/RS-485
Tx+ RXD
RxTx+ TXD
GND
RS-232 port for the connection to the
serial PC COM
X
-port
Earthing
Mains
connection
42 V
+
–
Connection of power pack DC 42 V
N1 PC (COMx-port)
U1 M-bus signal converter
WZC-S250
P1 M-bus terminal devices or M-bus
repeater WZC-R250
T1 Power pack DC 42 V
Use of pins on COMx (PC):
9 pins 25 pins
RXD 2 3
TXD 3 2
GND 5 7
Connection
terminals
Connection diagram