Siemens SIMATIC ET 200SP Manual page 18

Connecting
3.1 Wiring and block diagram
Wiring: 3-wire and 5-wire connection of IO-Link devices
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 without AUX terminals
(3-wire and 5-wire connection of IO-Link devices).
①
3-wire connection
②
5-wire connection
③
Backplane bus interface
④
Microprocessor
⑤
IO-Link circuitry
⑥
Polarity reversal protection
⑦
Color-coded label with color code CC04 (optional)
24 V DC Supply voltage L+
(infeed for light-colored BaseUnit only)
M Ground
Figure 3-1 Block diagram and terminal assignment for 3-wire and 5-wire connection of IO-Link devices
18
P1, P2, AUX Internal self-assembling voltage buses
C
n
RES
US
n
DIAG
Cn
Qn
Fn
PWR
Communication module IO-Link Master CM 4xIO-Link (6ES7137-6BD00-0BA0)
Connection to left (dark-colored BaseUnit)
Connection to left interrupted
(light-colored BaseUnit)
Communication signal, DI, DQ
Reserved, must not be assigned
Supply voltage (positive)
Error or diagnostics LED (green, red)
LED port status IO-Link mode (green)
LED port status SIO mode
LED port error
Power LED (green)
Manual, 10/2017, A5E03856846-AD