How many onboard I/O points does 6ES7288-1ST20-0AA1 provide?

6ES7288-1ST20-0AA1 provides 12 integrated 24 V DC digital inputs and 8 outputs. The output circuit is 24 V DC transistor, 0.5 A.

What power supply does 6ES7288-1ST20-0AA1 require?

6ES7288-1ST20-0AA1 uses 24 V DC nominal; 20.4 to 28.8 V DC permissible. Follow the complete Siemens wiring and protective-device instructions.

Which software programs 6ES7288-1ST20-0AA1?

Siemens specifies STEP 7 Micro/WIN SMART. The project must match CPU ST20, its firmware, I/O addresses, and communication settings.

Which components are compatible with 6ES7288-1ST20-0AA1?

S7-200 SMART project configured for CPU ST20 and complete MLFB 6ES7288-1ST20-0AA1 24 V DC sensors and field loads matched to the documented input and output circuits Industrial Ethernet/PROFINET and RS485 devices defined in the STEP 7 Micro/WIN SMART project S7-200 SMART expansion modules, signal boards, memory card, and cabling approved for the exact CPU

What are the official dimensions and approximate weight of 6ES7288-1ST20-0AA1?

6ES7288-1ST20-0AA1 measures 90 x 100 x 81 mm (W x H x D) and has an approximate device weight of 0.32 kg in the reviewed Siemens technical data.

6ES7288-1ST20-0AA1

Name: 6ES7288-1ST20-0AA1
Brand: Siemens
SKU: 6ES7288-1ST20-0AA1

SIMATIC S7-200 SMART CPU ST20

Product image is representative; revision or series may vary. Contact us to request a specific version.

Product Describe：

Siemens 6ES7288-1ST20-0AA1 is a SIMATIC S7-200 SMART ST20 standard expandable CPU with 12 integrated 24 V DC digital inputs, 8 24 V DC transistor outputs, and 20 KB memory.

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Technical specifications for 6ES7288-1ST20-0AA1

Manufacturer:

Siemens
Product Category:

PLC Systems
Spare Part Number:

6ES7288-1ST20-0AA1
Estimated shipping dimensions:

90 x 100 x 81 mm (official device dimensions)
Weight:

0.705 lbs (0.32 kg)
Tariff Code:

8537101101
Counliy of origin:

Germany
Product type:

SIMATIC S7-200 SMART CPU ST20
CPU design:

Standard expandable CPU
Onboard digital inputs:

12 inputs, 24 V DC
Onboard digital outputs:

8; 24 V DC transistor, 0.5 A
Power supply:

24 V DC nominal; 20.4 to 28.8 V DC permissible
Program/data memory:

20 KB
Engineering software:

STEP 7 Micro/WIN SMART
Communication:

1 x Industrial Ethernet/PROFINET and 1 x RS485
Mounting:

Standard DIN rail
Degree of protection:

IP20
Ambient operation:

-20 to 60 deg C for horizontal installation; follow orientation-specific limits in Siemens data
Lifecycle:

Current 0AA1 standard CPU article documented by Siemens; confirm regional ordering status at quotation.

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Information

Overview Manuals Common Applications Product Precautions

The Siemens 6ES7288-1ST20-0AA1 is a SIMATIC S7-200 SMART ST20 standard CPU with 12 integrated 24 V DC digital inputs, 8 24 V DC transistor outputs, and 20 KB of program/data memory.

CPU ST20
12 DI 24 V DC; 8 transistor DQ
24 V DC nominal; 20.4 to 28.8 V DC permissible
20 KB program/data memory

It executes the STEP 7 Micro/WIN SMART user program, reads the 12 onboard binary input signals, and commands 8 field outputs for fast solid-state switching and pulse-train motion on a compact DC-powered controller. Its transistor channels also support the high-speed pulse-output functions documented by Siemens. The standard CPU exchanges engineering, process, and diagnostic data over Industrial Ethernet/PROFINET and RS485, and can use compatible S7-200 SMART expansion components. It is suited to labeling, indexing, and compact motion machines.

Important Notice: Use the complete 6ES7288-1ST20-0AA1 code and verify the physical nameplate, firmware, project, accessories, and current Siemens documentation before installation or replacement.

Apter Power 6ES7288-1ST20-0AA1 Manuals and Guides

Important Notice: These are two separate Apter Power documents prepared from the manufacturer-published Siemens information named in each document. Confirm the physical nameplate, current Siemens documents, and host-system requirements before installation or replacement.

High-speed machine I/O

Reads 12 digital states and switches 8 transistor outputs without relay contact wear

Pulse-train positioning

Generates configured PTO signals for compatible motion components

Packaging and labeling

Coordinates sensors, actuators, and indexed motion in labeling, indexing, and compact motion machines

Networked compact control

Exchanges commands, process values, and diagnostics over the documented interfaces

Read the exact Siemens S7-200 SMART documentation before use. Verify 6ES7288-1ST20-0AA1, CPU ST20, power, I/O wiring, firmware, and project from the physical installation.

Identity: Match the complete 6ES7288-1ST20-0AA1 MLFB, CPU ST20 marking, hardware, and firmware

Power: Verify 24 V DC nominal; 20.4 to 28.8 V DC permissible and isolate all sources before wiring or removal

I/O: Observe every channel voltage, current, group common, polarity, and protective-device limit

Project: Back up and match the STEP 7 Micro/WIN SMART configuration, addresses, communications, and retentive data

Panel: Use DIN-rail mounting, protective earth, segregation, ventilation, and orientation limits from Siemens

Alternative Names

6ES7288-1ST20-0AA1 6ES7288 1ST20 0AA1 Siemens 6ES7288-1ST20-0AA1

Technical notes

Use the complete 6ES7288-1ST20-0AA1 identifier. Current 0AA1 standard CPU article documented by Siemens; confirm regional ordering status at quotation. Values not published in the cited Siemens sources are intentionally not inferred.

FAQ View All FAQ

What is Siemens 6ES7288-1ST20-0AA1?

The Siemens 6ES7288-1ST20-0AA1 is a SIMATIC S7-200 SMART ST20 standard CPU with 12 integrated 24 V DC digital inputs, 8 24 V DC transistor outputs, and 20 KB of program/data memory.
What does CPU ST20 do in an S7-200 SMART system?

It executes the STEP 7 Micro/WIN SMART user program, reads the 12 onboard binary input signals, and commands 8 field outputs for fast solid-state switching and pulse-train motion on a compact DC-powered controller. Its transistor channels also support the high-speed pulse-output functions documented by Siemens. The standard CPU exchanges engineering, process, and diagnostic data over Industrial Ethernet/PROFINET and RS485, and can use compatible S7-200 SMART expansion components. It is suited to labeling, indexing, and compact motion machines.
How many onboard I/O points does 6ES7288-1ST20-0AA1 provide?

6ES7288-1ST20-0AA1 provides 12 integrated 24 V DC digital inputs and 8 outputs. The output circuit is 24 V DC transistor, 0.5 A.
What power supply does 6ES7288-1ST20-0AA1 require?

6ES7288-1ST20-0AA1 uses 24 V DC nominal; 20.4 to 28.8 V DC permissible. Follow the complete Siemens wiring and protective-device instructions.

Which software programs 6ES7288-1ST20-0AA1?

Siemens specifies STEP 7 Micro/WIN SMART. The project must match CPU ST20, its firmware, I/O addresses, and communication settings.
Which components are compatible with 6ES7288-1ST20-0AA1?

S7-200 SMART project configured for CPU ST20 and complete MLFB 6ES7288-1ST20-0AA1 24 V DC sensors and field loads matched to the documented input and output circuits Industrial Ethernet/PROFINET and RS485 devices defined in the STEP 7 Micro/WIN SMART project S7-200 SMART expansion modules, signal boards, memory card, and cabling approved for the exact CPU
What are the official dimensions and approximate weight of 6ES7288-1ST20-0AA1?

6ES7288-1ST20-0AA1 measures 90 x 100 x 81 mm (W x H x D) and has an approximate device weight of 0.32 kg in the reviewed Siemens technical data.
What must be checked before installing 6ES7288-1ST20-0AA1?

Identity: Match the complete 6ES7288-1ST20-0AA1 MLFB, CPU ST20 marking, hardware, and firmware Power: Verify 24 V DC nominal; 20.4 to 28.8 V DC permissible and isolate all sources before wiring or removal I/O: Observe every channel voltage, current, group common, polarity, and protective-device limit Project: Back up and match the STEP 7 Micro/WIN SMART configuration, addresses, communications, and retentive data Panel: Use DIN-rail mounting, protective earth, segregation, ventilation, and orientation limits from Siemens

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