Siemens SIMATIC ET 200SP Manual page 24

Wiring
3.1 Pin assignment
Block diagram
The figure below shows the block diagram of the technology module.
You must ground the shields of the cables between encoder and technology module both
through the shield terminal on the BaseUnit (shield bracket and terminal) and also on the
encoder.
①
②
③
④
⑤
⑥
⑦
Figure 3-1
L+/M supply voltage
Connect the supply voltage (DC 24V) to the L+ and M connections. An internal protective
circuit protects the technology module from polarity reversal of the supply voltage. The
technology module monitors the connection of the supply voltage.
24
Electrical isolation
Shield terminal on the BaseUnit
Technology
Backplane bus interface module of the technology module
Backplane bus
Input filter
Incremental encoder with signal N
Block diagram with incremental encoder
Technology Module TM Count 1x24V (6ES7138-6AA00-0BA0)
Manual, 02/2017, A5E33002339-AB