Siemens SIMATIC ET 200SP Manual page 19

Wiring: 2-wire and 3-wire connection in DI operating mode
The following figure shows an example of the terminal assignment of the communication
module IO-Link Master CM 4xIO-Link on the BaseUnit BU type A0 with AUX terminals
(2-wire and 3-wire connection) in DI operating mode.
①
2-wire connection
②
3-wire connection
③
Color-coded labels with color code
CC04 and CC73 (optional)
④
Filter connection supply voltage (only
when light-colored BaseUnit is present)
24 V DC Supply voltage L+
(infeed for light-colored BaseUnit only)
M Ground
Figure 3-2 Terminal assignment for 2-wire and 3-wire connection in DI operating mode
Communication module IO-Link Master CM 4xIO-Link (6ES7137-6BD00-0BA0)
Manual, 10/2017, A5E03856846-AD
1 A to 10 A AUX terminals
PE (AUX) Protective conductor connection
P1, P2, AUX Internal self-assembling voltage buses
Connection to left (dark-colored BaseUnit)
Connection to left interrupted (light-colored BaseUnit)
C Communication signal, DI, DQ
n
RES Reserved, must not be assigned
US Supply voltage (positive)
n
Connecting
3.1 Wiring and block diagram
19