The architecture of the ET 200pro is based on the proven separation of modules from the bus/power supply connection system. This permits the T functionality for bus and 24 V DC power supply for the interface module, and prewiring of sensor/actuator connections for the electronics modules (independent wiring). When servicing, the independent wiring permits hot swapping of an electronics module without having to switch off the remaining station. This can continue without interruption during the replacement. When replacing an electronics module, the complete I/O wiring remains on the connection module, and need be neither labeled nor removed.

Up to 16 electronics modules can be arranged in any order between the interface module (left) and the terminating module (right limit).

Modules of an ET 200pro remote I/O station

The ET 200pro modules are usually designed in two or three parts. Interface and power modules as well as digital and analog electronics modules comprise:

• Bus module as mechanical and electrical connection element of the individual ET 200pro modules (they form the backplane bus of the system)
• Electronics or interface module
• Connection module

The ET 200pro modules are fitted when delivered on the associated bus module.

A ET 200pro remote I/O station consists of:

• Module support
• Interface module for PROFIBUS DP
• Connection module for the PROFIBUS DP interface module
  • CM IM DP direct with up to 6 M20 cable glands
  • CM IM DP ECOFAST Cu
  • CM IM DP M12 7/8"
• Max. 16 electronics modules with associated connection modules which may be assembled up to a station width of 1 m
• Terminating module (included in scope of delivery of interface module)

Expansion modules

The following expansion modules are available:

• Digital electronics modules
• Analog electronic modules
• Safety-related electronic modules
• I/O connection modules
  • CM IO 4 Г— M12 for digital or analog electronics modules
  • CM IO 8 Г— M12 for digital electronics modules
  • CM IO 12 Г— M12 for 4/8 F‑DI/4 F‑DO
  • CM IO 16 Г— M12 for 8/16 F‑DI
• Power module electronics PM‑E
• Connection modules for power module
  • CM PM-E direct with up to 2 M20 cable glands
  • CM PM-E ECOFAST Cu
  • CM PM-E 7/8"

Module support

Various module supports are available for mounting the ET 200pro:

• Narrow module support
  With two mounting flanges, the ET 200pro remote I/O station can be completely pre-installed on this module support on the workbench.

• Compact-narrow module support
  The compact-narrow module support permits the most space-saving design.

Expansion limits

• Number of electronics modules per station (between interface module and terminating module): up to 16
• Max. width (without module support): 1 m
• Electronics/sensor supply 1L+ max. 5 A per station
• Load voltage supply 2L+ max. 10 A per potential group
• Maximum address range of a station: 244 bytes for inputs and 244 bytes for outputs

ET 200pro configuration

The TIA Selection Tool can be used to assemble an ET 200pro remote I/O station quickly and easily. The tool is familiar with the configuration rules and supports users in the selection of all components and associated accessories in interactive mode.

http://www.siemens.com/tia-selection-tool

Note:

Please note when working with the TIA Selection Tool that the applications and product range of ET 200pro are limited in the context of SIMATIC PCS 7!