Siemens simatic ET 200MP - Front Connector for the I;O Modules; Characteristics of the Front Connector

Wiring
6.8 Front connector for the I/O modules
ET 200MP Distributed I/O System
System Manual, 01/2013, A5E03723484-01
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6.8 Front connector for the I/O modules
6.8.1 Characteristics of the front connector
Introduction
The sensors and actuators of your plant are connected to the ET 200MP distributed I/O
system by means of front connectors. Wire the sensors and actuators to the front connector
and then plug it into the I/O module You can either wire the front connector in the "pre-wiring
position" that makes convenient wiring possible, or completely, before you insert it into the
I/O module.
The front connector can be detached from the I/O module with the wiring attached. Thus
during the replacement of a module it is not necessary to loosen the wiring.
Characteristics of the front connector
Figure 6-5 Front connectors