A 40-point compact serial CPU that combines 24 digital inputs and 16 relay outputs in a fixed, non-expandable controller.
Brand:
SIEMENSItem NO.:
6ES7288-1CR40-0AA1Part Number:
6ES7288-1CR40-0AA1Weight:
440 gDimensions:
125 × 100 × 81 mmCertification:
CEDescription:
A 40-point compact serial CPU that combines 24 digital inputs and 16 relay outputs in a fixed, non-expandable controller.Siemens identifies 6ES7288-1CR40-0AA1 as the SIMATIC S7-200 SMART CPU CR40s (AC/DC/Relay). A 40-point compact serial CPU that combines 24 digital inputs and 16 relay outputs in a fixed, non-expandable controller.
SR CPUs combine AC supply, 24 V DC inputs and relay outputs across several onboard I/O sizes.
ST CPUs provide DC/DC/DC architecture for high-speed transistor-output applications.
Compact CR and CRs controllers cover fixed-I/O relay projects in multiple point counts.
Published S7-200 SMART digital and analog expansion options for compatible expandable CPUs.
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Use the exact Siemens order number and verify the system constraints before procurement.
Confirm the machine needs no more than 24 digital inputs and 16 relay outputs.
Verify every switched load remains within the 2 A relay rating and the documented DC or AC voltage range.
Select RS485 cabling, protocol and baud rate before panel wiring.
Choose this CPU only when no expansion module, signal board or memory card is required.
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Auxiliary relay option for protection and control applications.
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Specialist brandAnswers below use Siemens official product documentation for this exact order number.
It is the SIMATIC S7-200 SMART CPU CR40s, an AC-powered compact serial CPU with 24 digital inputs and 16 relay digital outputs.
There are 40 onboard points: 24 inputs and 16 relay outputs.
No. Siemens classifies this compact CPU as fixed I/O with no expansion-module or signal-board support.
The CPU accepts 85 to 264 V AC at 47 to 63 Hz.
Each dry-contact relay output is rated up to 2 A, with a documented switching range of 5–30 V DC or 5–250 V AC.
It provides 12 KB of program memory, 8 KB of data memory and 2 KB of retentive memory.
Yes. Siemens specifies four 100 kHz single-phase counters or two 50 kHz quadrature counters.
Siemens specifies STEP 7 Micro/WIN SMART for engineering the S7-200 SMART CPU.
Software, licensing, controller, interface, shield and power-supply references.
Internal cable references for 40-channel input and output connections to field termination assemblies.
I/O Companion Slot to FTA · 2.5 m
I/O Companion Slot to FTA · 4.5 m
I/O Companion Slot to FTA · 6.5 m
I/O Companion Slot to FTA · 8.5 m
I/O Companion Slot to FTA · 10.5 m
I/O Companion Slot to FTA · 12.5 m
I/O Companion Slot to FTA · 4.5 m
I/O Companion Slot to FTA · 6.5 m
I/O Companion Slot to FTA · 8.5 m
Use the verified electrical and system limits—not generic family assumptions—to decide suitability.
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