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Siemens module 6ES72121AE400XB0

LEHIY item code: LH-0042

The 6ES72121AE400XB0 belongs to the Siemens S7-1200 series CPU 1211C module.

Quick buying check

This page helps you check Siemens module 6ES72121AE400XB0 before you ask for a quote.

Confirm the brand, model number, part number, and quantity. Share a clear nameplate photo when the old item has close variants.

LEHIY can check stock, lead time, packing, shipping documents, and safe replacement options for maintenance orders.

6ES72121AE400XB0 is a CPU module in Siemens S7-1200 series, namely CPU1212C. S7-1200 is a compact, modular programmable logic controller (PLC) introduced by Siemens, which is suitable for various small automation control systems.

This CPU module has rich functions and good scalability. It can communicate with other devices through the integrated PROFINET interface to facilitate the construction of automation networks. It supports a variety of programming languages, such as LadderDiagram(LD, ladder diagram), StructuredText(ST, structured text), etc., which is convenient for users to develop programs according to their own needs.

1. Power

  • Supply voltage :20.4-28.8VDC

  • Maximum current consumption :0.35A (no load)

2. Digital Input/Output

  • Input Points :8 o'clock, 24VDC input

  • output points :6 points, transistor output (drain type/source type), maximum output current 0.5A

3. Analog Input/Output

  • analog input :2 points, supports 0-10V, 0-20mA and other signal types

  • Resolution :12 bits

4. Storage capacity

  • Program memory :75KB

  • data storage :75KB

5. Communication interface

  • PROFINET interface :1, supporting TCP/IP, ISO-on-TCP, S7 communication protocols, can be used to communicate with programming equipment, HMI (human machine interface) equipment and other PLC.

  • Communication rate : up to 100Mbps

6. Processing power

  • Boolean execution time :0.08 μs/instruction

  • integer operation execution time :0.16 μs/instruction

  • Floating-point execution time :0.33 μs/instruction

7. Scalability

  • signal board : 1 signal board can be connected to expand digital or analog I/O

  • Signal Module : Multiple signal modules can be connected, which can be expanded to up to 8 modules to further increase I/O points

1. Industrial automation production line

  • In small machining and assembly lines, it can control the action sequence of various equipment, such as the start and stop of the conveyor belt, the grabbing and placing of the manipulator, etc., to realize the automatic production of products.

  • Collect and process the sensor data on the production line, such as detecting the size, position and other information of the product, and perform corresponding control operations according to the detection results to ensure product quality.

2. Intelligent Building

  • Used for lighting system control in buildings, according to different time, ambient brightness and personnel activities, automatically adjust the switch and brightness of lighting equipment to achieve energy saving purposes.

  • Control the operation of the air-conditioning system, and automatically adjust the cooling, heating and wind speed of the air-conditioning according to the indoor temperature, humidity and other parameters to improve indoor comfort.

3. Logistics & Warehousing

  • In the automated warehouse, control the operation of stackers, conveyors and other equipment to realize the automatic storage and handling of goods.

  • Real-time monitoring and management of inventory information in the warehouse, through communication with the host computer system, to achieve the upload and sharing of inventory data.

4. Small water treatment system

  • control water pump, valve switch, realize the water delivery and distribution.

  • Monitor water quality parameters, such as pH, dissolved oxygen, etc., and automatically adjust the operation of dosing equipment according to the monitoring results to ensure that the water quality meets the standard.

Plain language sourcing guide for Siemens module 6ES72121AE400XB0

Start with the full model name. Check the brand name. Check the part number. Check the code on the old unit. These small checks help you avoid a wrong order.

Take one clear photo of the front label. Take one photo of the side label. If the part has a cable, plug, port, seal, coil, or screen, take a photo of that area too.

Tell us the quantity you need. Tell us your country. Tell us the date when the plant needs the part. We can then check stock, lead time, safe packing, and the best shipping plan.

If the exact model is no longer made, do not guess. Send the old model and the use case. LEHIY can compare close options and explain which choice is safer for repair work.

Use simple order notes. Write the model in one line. Write the quantity in one line. Write the delivery country in one line. This helps our team reply faster.

Check the old part before removal. Look at the label. Look at the connector. Look at the mounting size. Look at the voltage or pressure rating if it is shown.

Do not rely on a short nickname for a part. Many industrial items have close versions. A small suffix can change the plug, output, range, or software setting.

Ask for a stock check if the plant is stopped. Ask for a lead time if the order is planned. Ask for packing photos if the part is fragile or heavy.

For a replacement order, tell us what failed. Tell us where the part is used. Tell us if an equal model is acceptable. This makes the first answer more useful.

For repeat orders, send the last invoice, old label, or old packing photo. The same reference can help us match the correct product again.

For urgent service, keep the message simple. One model, one quantity, one photo, and one delivery target are enough for a fast first check.

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Brand Name:SiemensCertification:ISO9001, CE
Place of Origin:ChinaCondition:New
Warranty:1 yearCustomized sourcing:available

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Siemens module 6ES72121AE400XB0

Send the brand, model, part number, quantity, nameplate photos, and application requirements. LEHIY will check availability, suitable alternatives, packing details, and delivery options before quoting.

For discontinued, temporarily unavailable, or configuration-sensitive items, our team can compare the requested model with close variants or compatible replacements for maintenance and spare parts planning.

Use this page as a practical sourcing note for engineers, buyers, and maintenance teams comparing automation components. Check the model name, brand, LEHIY code, application, and replacement requirements before sending an inquiry.

Short, clear information helps our team confirm availability faster and reduce back-and-forth communication during urgent maintenance projects.

  • Confirm the complete model number and any suffix printed on the nameplate.
  • Share quantity, destination country, preferred shipping method, and target delivery date.
  • Include photos, drawings, old purchase records, or datasheets when compatible alternatives are acceptable.
  • Ask for stock checking, replacement comparison, packing details, and export documentation before ordering.

Useful details for a faster quote

  • Complete model and part number
  • Required quantity and target delivery date
  • Nameplate photos, drawings, or old purchase records
  • Voltage, signal range, dimensions, or accessory needs
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Siemens module 6ES72121AE400XB0 verification notes

Please send the full model number, quantity, target delivery date, and nameplate photos. These details help us check the requested product or a close replacement.

LEHIY reviews product name, part number, series, label information, and application requirements before shipment.

If the original model is discontinued or supplied with different accessories, we can explain practical differences before quoting.

For repeat purchasing, we can help organize related models, replacement parts, shipment schedules, and clear communication for your team.

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