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Siemens S7-200 SMART CPU ST40 40 I/O
Siemens S7-200 SMART CPU ST40 40 I/O
Siemens S7-200 SMART CPU ST40 40 I/O

Siemens 6ES7288-1ST40-0AA1 SIMATIC S7-200 SMART CPU ST40 DC/DC/DC

EMAIL SALES
Siemens official data verified
6ES7288-1ST40-0AA1 — CPU ST40

A mid-size 24 V DC CPU with 40 onboard I/O points, three fast pulse outputs and room for six expansion modules.

Standard expandable40 onboard I/O100 kHz pulse outputsEthernet + RS485
Sales managerTiffany Guan
Mobile / WhatsApp+86 18030235313
Officially verified CPU profile
Product familySIMATIC S7-200 SMART
CPU designationCPU ST40 / DC/DC/DC
Onboard digital I/O24 DI / 16 DQ
CPU memory24 KB program / 16 KB data
Expansion profileUp to 6 expansion modules plus 1 signal board
Dimensions125 × 100 × 81 mm
  • Brand:

    SIEMENS
  • Item NO.:

    6ES7288-1ST40-0AA1
  • Part Number:

    6ES7288-1ST40-0AA1
  • Dimensions:

    125 × 100 × 81 mm
  • Certification:

    Siemens EU/UK Declaration of Conformity
  • Description:

    SIMATIC S7-200 SMART CPU ST40 DC/DC/DC, 24 DI / 16 DQ
6ES7288-1ST40-0AA1 configuration inquiry

Get a precise quote for Siemens CPU ST40

Email Sales
Sales managerTiffany Guan
WhatsApp+86 18030235313

6ES7288-1ST40-0AA1 official identification

Siemens identifies 6ES7288-1ST40-0AA1 as the SIMATIC S7-200 SMART CPU ST40 (DC/DC/DC). A mid-size 24 V DC CPU with 40 onboard I/O points, three fast pulse outputs and room for six expansion modules.

Onboard I/O architecture24 digital inputs and 16 transistor digital outputs provide 40 onboard points.
Power and output design24 V DC (20.4–28.8 V DC); 24 V DC transistor, 0.5 A per output.
Memory allocation24 KB program memory plus 16 KB user data, 40 KB combined.
System architectureUp to 6 expansion modules plus 1 signal board. Integrated Ethernet and RS485; web server supported.

Verified technical facts

  • High-speed counters: 4 counters at 200 kHz plus 2 at 30 kHz in single-phase mode.
  • Pulse-output profile: 3 high-speed pulse outputs at up to 100 kHz.
  • Real-time clock with 7-day backup.
  • Mechanical dimensions: 125 × 100 × 81 mm (W × H × D).
  • Engineering environment: STEP 7 Micro/WIN SMART.
Recommended model families

More Siemens S7-200 SMART models

Standard relay CPUs6ES7288-1SR20-0AA16ES7288-1SR30-0AA16ES7288-1SR40-0AA1

SR CPUs combine AC supply, 24 V DC inputs and relay outputs across several onboard I/O sizes.

Standard transistor CPUs6ES7288-1ST20-0AA16ES7288-1ST30-0AA16ES7288-1ST60-0AA1

ST CPUs provide DC/DC/DC architecture for high-speed transistor-output applications.

Compact relay CPUs6ES7288-1CR20-0AA16ES7288-1CR30-0AA16ES7288-1CR40-0AA1

Compact CR and CRs controllers cover fixed-I/O relay projects in multiple point counts.

Expansion I/O modules6ES7288-2DE08-0AA06ES7288-2DE16-0AA06ES7288-2DR16-0AA0

Published S7-200 SMART digital and analog expansion options for compatible expandable CPUs.

Additional published brands

Additional Advantage Models

ABBABB DSTA002B / 3BSE018317R1ABB RAI02JABB 3BHE037864R0104 / UFC911 B104

Selected ABB control, I/O and measurement products already published on Nordwel.

HONEYWELLHoneywell FC-IOTA-NR24 / 51306507-175Honeywell FC-SCNTO2Honeywell FC-TSDO-04UNI

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GEGE IS215VPROH2BCGE IS200VCMIH2CAA / IS215VCMIH2CAGE DS200TCQAG1BFD

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SQUARE D / SCHNEIDERSchneider PN072132P902 / 3D658187G901Schneider RM1-XA315Schneider XS4P18AB120

Square D belongs to Schneider Electric; these linked Schneider products are already published on Nordwel.

BENTLY NEVADA 330904Bently Nevada 330904-00-24-10-01-CNBently Nevada 330904-00-23-10-01-00Bently Nevada 330904-00-23-10-01-CN

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VIBRO-METERVibro-Meter AF70982 / 111-412-000-012Vibro-Meter TQ402 / 111-402-000-012Vibro-Meter S3960 AC46286 / 144-201-000-222

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BENTLY NEVADA 330905Bently Nevada 330904-00-22-10-01-00Bently Nevada 330905-00-03-10-01-CNBently Nevada 330905-00-04-10-01-CN

Selected Bently Nevada 330904 and 330905 NSv proximity probes with verified Nordwel contact details.

BENTLY NEVADA SYSTEMSBently Nevada 330905-00-04-10-01-00Bently Nevada 330910-00-24-10-01-CNBently Nevada 3500/22M / 288055-01

Selected Bently Nevada 330905, 330910 and 3500 system products with verified Nordwel contact details.

Every model above links to an existing Nordwel product page. Send the full part number for configuration and availability confirmation. CHECK WITH SALES

6ES7288-1ST40-0AA1 Order Guide

A specification-first checklist for the Siemens SIMATIC S7-200 SMART CPU ST40.
1Confirm the CPU familyConfirm the SIMATIC S7-200 SMART standard CPU platform.
2Verify the electrical codeVerify the DC/DC/DC electrical design and field-voltage plan.
3Count the onboard I/OCount 24 DI and 16 DQ before adding expansion I/O.
4Review expansion needsConfirm whether up to six modules and one signal board cover the design.
5Check interfaces and spaceCheck Ethernet, RS485 and 3 high-speed pulse outputs at up to 100 khz.
6Validate the article numberMatch the quotation to the complete article number 6ES7288-1ST40-0AA1.

Middle East Demand & Specialist Models

Selected specialist-brand products requested for regional projects and available on Nordwel.

Recent demand based on Nordwel inquiry records.
Confirm the exact part number before ordering.
AREVA / Protection RelayMVAJ101RA0802A

Auxiliary relay option for protection and control applications.

Recent Middle East inquiry
Hirschmann / Fiber Optic6ES7288-5CM01-0AA0

SIMATIC S7-200 SMART RS485 communication board.

Recent Middle East inquiry
Pepperl+Fuchs / Remote I/ORSD-GW3-Ex2.DPE

Remote I/O gateway for demanding process-system environments.

Specialist brand
Schneider Electric / Drive BoardPN072132P902 / 3D658187G901

Replacement inverter driver board for installed industrial systems.

Specialist brand
Load Cell Central / Signal ConditioningOM-19-2

Amplifier transducer for load-cell signal conditioning.

Specialist brand
XP Power / Power SupplyF7A4K6G2 / A1A0100275

Industrial power-supply model for legacy equipment support.

Specialist brand
Nordwel customer support

6ES7288-1ST40-0AA1 Services & FAQ

Model-specific support grounded in the Siemens identification and technical data for CPU ST40.

Company services

Exact article-number checkConfirm 6ES7288-1ST40-0AA1 rather than relying on a shortened CPU name.
Electrical configuration reviewReview supply, input and transistor output requirements before quotation.
Availability coordinationConfirm current stock, lead time, condition and warranty against current business records.
Worldwide shipping supportCoordinate destination, packing, freight option and shipment tracking.

6ES7288-1ST40-0AA1 FAQ

What exactly is Siemens 6ES7288-1ST40-0AA1?6ES7288-1ST40-0AA1 is the SIMATIC S7-200 SMART CPU ST40, identified by Siemens as DC/DC/DC with 24 onboard digital inputs and 16 onboard digital outputs.
How many onboard I/O points does 6ES7288-1ST40-0AA1 provide?6ES7288-1ST40-0AA1 provides 40 onboard digital points: 24 inputs and 16 outputs.
Which supply voltage is specified for 6ES7288-1ST40-0AA1?The Siemens specification lists 24 V DC (20.4–28.8 V DC) for 6ES7288-1ST40-0AA1.
What output technology does 6ES7288-1ST40-0AA1 use?6ES7288-1ST40-0AA1 uses 24 V DC transistor, 0.5 A per output. The connected load and protective circuit must follow the Siemens wiring requirements.
How much CPU memory is available in 6ES7288-1ST40-0AA1?It provides 24 KB of program memory and 16 KB of user data, for 40 KB combined.
Can 6ES7288-1ST40-0AA1 accept expansion modules?Up to 6 expansion modules plus 1 signal board. This is a defining selection difference for the CPU ST40.
What high-speed counting capability is documented for 6ES7288-1ST40-0AA1?Siemens documents 4 counters at 200 kHz plus 2 at 30 kHz in single-phase mode for 6ES7288-1ST40-0AA1.
Does 6ES7288-1ST40-0AA1 support high-speed pulse outputs?3 high-speed pulse outputs at up to 100 kHz.
What are the enclosure dimensions of 6ES7288-1ST40-0AA1?The CPU measures 125 × 100 × 81 mm (W × H × D).
Which communication interfaces are integrated in 6ES7288-1ST40-0AA1?The standard CPU ST40 integrates Ethernet and RS485 communication and supports the CPU web server.
Which engineering software is used with 6ES7288-1ST40-0AA1?Siemens specifies STEP 7 Micro/WIN SMART for programming and commissioning S7-200 SMART CPUs.
Sales managerTiffany Guan
WhatsApp+86 18030235313
ICS TRIPLEX / TRUSTED

Trusted T8000 Series Model Directory

Software, licensing, controller, interface, shield and power-supply references.

Software & Licensing

T8013SOE & Process Historian Software Package
T8017Peer to Peer Communications Software Package
T8019Process Control Algorithm Software Package
T8030SOPC Server Package
T8082DIEC1131 Toolset Suite; Licensed to Hard Drive
T8082UIEC1131 Toolset Suite; USB Port Dongle
T8090MLicense for SIS Workstation 1.0 MED

Controller, Interface & Power Modules

T8100CController Chassis Module
T8111CProcessor Module
T8120CProcessor Interface Adaptor Module
T8121CProcessor Interface Adaptor Module (IRIG-B)
T8122CProcessor Interface Adaptor Module (MODBUS Master)
T8123CProcessor Interface Adaptor Module (IRIG-B and MODBUS Master)
T8151CCommunication Interface Module

Communication Adaptors, Shield & Power Modules

T8153CCommunication Interface Adaptor Module
T8191Shield Module
T8193Shield Module
T8231Power Supply Module
Exact-match links open existing Nordwel product pages. Reference-only models remain unlinked until a matching product page is published.
ICS TRIPLEX / I/O CABLES

Companion-Slot to FTA Cable Selection

Internal cable references for 40-channel input and output connections to field termination assemblies.

INPUT · 40 CHANNEL
TC-201-02-2M5

I/O Companion Slot to FTA · 2.5 m

INPUT · 40 CHANNEL
TC-201-02-4M5

I/O Companion Slot to FTA · 4.5 m

INPUT · 40 CHANNEL
TC-201-02-6M5

I/O Companion Slot to FTA · 6.5 m

INPUT · 40 CHANNEL
TC-201-02-8M5

I/O Companion Slot to FTA · 8.5 m

INPUT · 40 CHANNEL
TC-201-02-10M5

I/O Companion Slot to FTA · 10.5 m

INPUT · 40 CHANNEL
TC-201-02-12M5

I/O Companion Slot to FTA · 12.5 m

OUTPUT · 40 CHANNEL
TC-205-02-4M5

I/O Companion Slot to FTA · 4.5 m

OUTPUT · 40 CHANNEL
TC-205-02-6M5

I/O Companion Slot to FTA · 6.5 m

OUTPUT · 40 CHANNEL
TC-205-02-8M5

I/O Companion Slot to FTA · 8.5 m

Exact-match links open existing Nordwel product pages. Confirm channel direction, cable length and FTA compatibility before quotation.
SIMATIC S7-200 SMART capability fit

6ES7288-1ST40-0AA1 Applications & Why Choose Nordwel

Capability-led fit considerations derived from the official CPU ST40 electrical, I/O and expansion profile.

Application fit considerations

01Fast discrete machine controlUse the documented transistor outputs where short switching times and 24 V DC loads are required.
02Pulse-train controlEvaluate the 3 high-speed pulse outputs at up to 100 khz against the pulse-input needs of the connected drive or actuator.
03High-speed countingUse the documented 4 counters at 200 khz plus 2 at 30 khz in single-phase mode when reviewing encoder or pulse-source interfaces.
04Expandable machine cellsPlan additional digital or analog points through up to six expansion modules and one signal board.

Why choose Nordwel

Model-specific reviewCheck the complete 6ES7288-1ST40-0AA1 article number against the requested CPU architecture.
Fast quotationConfirm pricing, availability and lead time from current records.
Worldwide coordinationSupport freight, packing and shipment-tracking requirements.
Dedicated contactWork directly with Tiffany Guan for pre-order clarification and follow-up.
Final suitability depends on the field supply, load type, I/O count, communication plan and cabinet design.
Need help confirming 6ES7288-1ST40-0AA1?CONTACT SALES
Need a hard-to-find industrial spare?Send the complete model, manufacturer, quantity and equipment nameplate. Nordwel will cross-check the exact brand, revision, electrical interface and mechanical configuration before quotation.
CROSS-BRAND MODEL SUPPORT

Industrial Spare Parts Reference

Selected legacy and specialist models for motion, sensing, pneumatic and control-system applications.

Motion & DrivesBLS3-4 BLS3Legacy servo/control unit; confirm the full BLS3 designation.
Pneumatic & Process2000018 KA12A10A0 11180747BEKO/BEKOMAT condensate-drain component reference.
Sensors & MeasurementMS2712RZero-speed monitoring device; verify supply and revision.
Motion & DrivesAE100M 200-00182Rotary encoder reference; confirm interface and mounting.
Sensors & MeasurementSFET-F500-L-W18-B-K1Configured industrial sensor assembly; verify the full option string.
Pneumatic & ProcessTZ2LE024PGVAB 074308Configured valve component; confirm coil voltage and port options.
PLC, Power & Communication6ES59417UA12Siemens SIMATIC S5 module reference; confirm the installed rack function.
Motion & DrivesMDX60A0110503400 8226857SEW-EURODRIVE MOVIDRIVE inverter reference.
Sensors & MeasurementPTP35A2A13P1PH4AConfigured process-instrument reference; verify range and output.
PLC, Power & CommunicationHITACHI 33016136-5Hitachi industrial control spare; confirm the host equipment family.
Pneumatic & ProcessNUMATICS 34203626Numatics pneumatic component; verify valve and coil configuration.
Sensors & MeasurementHBM WA/20mm 050310129 090610052HBM displacement transducer with 20 mm measurement reference.
Pneumatic & ProcessFESTO 184518 DPA-63-10Festo twin-piston pneumatic pressure booster.
PLC, Power & CommunicationH920Legacy industrial control spare; nameplate confirmation required.
Sensors & MeasurementPN3093ifm electronic pressure sensor with digital display.
PLC, Power & CommunicationK2001000100MConfigured cable or assembly reference; confirm the equipment family.
PLC, Power & CommunicationPCD3W800Saia PCD3 analog I/O module reference.
Motion & Drives49/F2-10 P 80 B14 B3Configured motor and gearbox assembly reference.
Sensors & MeasurementUB40012GME5V1Pepperl+Fuchs UB400 ultrasonic sensor.
PLC, Power & CommunicationDFR713PLegacy electronic control spare; confirm manufacturer and revision.
Sensors & MeasurementPT/EL-DR-5BAR-S1-HA-TH-SS5 bar pressure-instrument reference; verify materials and output.
Sensors & MeasurementUDS3/200MB/4/20/G1/4E/FConfigured pressure sensor/transmitter reference.
Motion & DrivesVRDM397/50LWBBerger Lahr stepper motor reference.
Pneumatic & ProcessMPPES31410420Festo proportional pressure regulator reference.
PLC, Power & Communication6GK57980SN000EA0Siemens industrial communication accessory; verify installed function.
Sensors & MeasurementWTT280L-2P2531SICK PowerProx time-of-flight photoelectric sensor.
Pneumatic & ProcessMSQB20H2SMC compact rotary table/actuator reference.
Pneumatic & ProcessMSQB30H3SMC compact rotary table/actuator reference.
PLC, Power & CommunicationMCRSLUI0Phoenix Contact analog signal conditioner reference.
Motion & Drives6FX11422BA02Siemens drive/CNC electronic module reference.
No exact Nordwel product pages were found for this reference list. Final supply must be confirmed from the manufacturer nameplate, complete ordering code and installed-system context.
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