Siemens SIMATIC ET 200X - Basic Circuit Diagram of the BM 142 DO 4 X DC 24 V;2 A Basic Module

Technical Specifications
7-19
ET 200X Distributed I/O Device
EWA 4NEB 780601602-06
Basic circuit diagram
The basic circuit diagram of the basic module is shown below.
Connector assembly
PROFIBUS
address
PROFIBUS-D
P connection
A
B
Electrical
isolation
Electronic
comp.
Internal power
supply
ON
Backplane bus
interface
1M
Socket connections
(see Table 7-8)
24 VDC
BF SF
Load voltage
monitor
1L+ 1M
AB
2L+ 2M
Supply voltage
Electronic components/
sensors
Load voltage
X01
X02
X03
Figure 7-4 Basic circuit diagram of the BM 142 DO 4 x DC 24V/2A basic module