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Siemens SIMATIC S7-400 Series PLC CPU for Use with SIMATIC S7-400 Series

The Siemens SIMATIC S7-400 Series PLC CPU is the perfect addition to your SIMATIC S7-400 Series. With its powerful performance and seamless compatibility, it enhances the overall efficiency and productivity of your operations.
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Siemens PLC CPU, 32MB Working Memory, 4 x Interfaces - SIMATIC S7-400 Series 

Speed up processes in your automation network with this PLC CPU from Siemens. In just 7.5ns, it uses the signals from SIMATIC S7-400 field devices to perform bit and word operations, and fixed-point and floating-point arithmetic. Controlling large networks is a breeze for this unit, which supports up to 131,072 digital input and output channels. With an operating temperature range from 0°C to +60°C, it's a hardy choice for demanding work areas. CPUs like this one are used in many applications including production lines, lighting setups, packaging plants and motion control systems.


• Hassle-free status monitoring thanks to its integrated programme alarms and process diagnostic messages
• Supports up to 8192 input and output channels for versatility
• Battery-powered backup storage for protection against data loss
• Low profile of 50mm to slot into narrow mounting areas
• Maximum input current of 1.6A means it draws little energy

What programming languages does this unit support?

This PLC CPU supports programming in LAD, FBD, STL, SCL, CFC, GRAPH and HiGraph languages, so it covers all the bases.


Attribute Value
Manufacturer Series SIMATIC S7-400
Number of Inputs 0
For Use With SIMATIC S7-400 Series
Interface RS-485
Programming Language Used CFC, FBD, GRAPH, Higraph, Ladder Logic, SCL, STL
Number of  Inputs 8
Width 50mm
Length 290mm
Minimum Operating Temperature 0°C
Depth 219mm
Display Included No
Memory 32 MB
Standards Met CE Certified, CSA Certified, UL Listed
Battery Backup Yes
Output Current 150 mA
Dimensions 290 x 50 x 219 mm
Maximum Operating Temperature +60°C

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