Siemens S7-1500 - Product Overview; What is SIMATIC TOP connect system cabling?

SIMATIC TOP connect for S7-1500 and ET200MP
Manual,
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Product overview
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3.1
What is SIMATIC TOP connect system cabling?
Introduction
SIMATIC TOP connect system cabling is an efficient way to connect the I/O modules (input
and output modules) of the SIMATIC controller S7-1500 I/O and ET 200MP.
SIMATIC TOP connect uses standardized connectors and reduces the wiring work required.
There are two types of connection:
● Fully modular connection:
for connecting sensors and actuators in the field.
● Flexible connection:
for simple wiring inside the control cabinet.
Area of application
SIMATIC TOP connect allows you to wire actuators and sensors "locally" to one or more
terminal modules. Connection to the I/O modules takes place via connecting cable.
Figure 3-1 SIMATIC TOP connect with an S7-1500