Siemens SIMATIC ET 200AL, Системное руководство

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System overview
2.3 Components
Distributed I/O system
System Manual, 08/2021, A5E31861578-AJ
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2.3 Components
Components of the ET 200AL distributed I/O system
The following table shows and explains the function of the most important components of
the ET 200AL distributed I/O system.
Table 2- 2 Components of the ET 200AL distributed I/O system
Components Function View
Interface module for PROFINET IO •
The interface module connects the
ET 200AL distributed I/O system with the
IO controller
• Exchanges data with the I/O modules via
ET-Connection
Interface module for PROFIBUS DP •
The interface module connects the
ET 200AL distributed I/O system with the
DP master
• Exchanges data with the I/O modules via
ET-Connection
I/O modules
• The I/O modules form the interface to the
process
• Recording and controlling the current
process status via the connected sensors
and actuators
eCoding plug connector Electronic coding element with an overwrita-
ble electronic memory for module-specific fail-
safe address data (for example, the F-
destination address)
Y-cable Y-cable connects multiple actuators or sensors
to inputs or outputs. There are two types:
•
Y-cable: Connects inputs or outputs of the
module to several actuators or sensors.
• Inverted Y-cable: Connects several fail-safe
inputs or outputs of the F-module with one
or more sensors and actuators
Identification labels
• The identification labels come with the
module and can be machine printed
• Can be ordered separately in white or yel-
low for fail-safe modules