Siemens SIMATIC ET 200SP Manual page 13

Wiring
3.1 Wiring and block diagram
Connection: 3-wire connection
The figure below shows the block diagram and an example of the terminal assignment of the
digital input module DI 8x24VDC BA on the BaseUnit BU type A0 with AUX terminals (3-wire
connection).
①
②
③
DI
n
24 V DC
L+
M
1 A to 10 A
P1, P2, AUX
Figure 3-2
12
3-wire connection
Color identification labels CCxx (optional)
Filter connection supply voltage (only when light-colored BaseUnit is present)
Input signal, channel n
Encoder supply, channel n
24 V DC (feed for light-colored BaseUnit only)
Ground
AUX terminals
Internal self-configuring voltage buses
Connection to left (dark BaseUnit)
Connection to left interrupted (light BaseUnit)
Wiring and block diagram for 3-wire connection of encoders
Digital input module DI 8x24VDC BA (6ES7131-6BF01-0AA0)
Manual, 02/2019, A5E34941724-AB