

Siemens module 6ES72121HE400XB0
LEHIY item code: LH-0043
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This page helps you check Siemens module 6ES72121HE400XB0 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.
6ES72121HE400XB0 is a CPU module in Siemens S7-1200 series, model CPU1212C. S7-1200 is a programmable logic controller (PLC) tailored by Siemens for small automation systems, with compact design, flexible scalability and powerful functions.
This CPU1212C has integrated input and output interfaces and supports multiple communication methods, which can easily connect and interact with other devices. It adopts modular design, allowing users to expand I/O points and functions according to actual needs, and is suitable for various small automation control tasks.
1. Power
Supply voltage :20.4-28.8VDC
Maximum current consumption : Typical value is 0.35A (no load)
2. Digital Input/Output
input points :8, 24VDC input
Output points :6, relay output, the rated current of each relay contact is 2A
Input response time : Typical value is 1.2ms
output response time : typical value is 10ms
3. Analog Input/Output
Analog Input Points :2
Input signal range : Supports signal types such as 0-10V and 0-20mA
Resolution :12 bits
Analog Output Points : None
4. Storage capacity
Program memory :75KB
data storage :75KB
5. Communication interface
PROFINET interface :1, supporting TCP/IP, ISO-on-TCP and S7 communication protocols, and can be used to communicate with programming equipment, human-machine interface (HMI), other PLC, etc.
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 modules : Up to 3 signal modules can be connected to further increase I/O points and functions
1. Small industrial automation production line
: Used to control the action of small machine tools, such as tool feed, spindle start and stop, etc., to achieve automatic processing of parts.
Assembly line : Control various equipment on the assembly line, such as conveyor belts, manipulators, etc., to complete the assembly task of the product.
2. Intelligent building field
lighting control : According to different time periods, ambient brightness and personnel activities, the lighting system in the building is automatically adjusted to achieve energy saving and intelligent management.
Air conditioning control : Monitor indoor temperature, humidity and other parameters, control the operation of air conditioning equipment, and improve indoor comfort.
3. Logistics and Warehousing Automation
small warehouse : control the operation of stackers, conveyors and other equipment to realize the automatic storage and handling of goods.
sorting system : According to the information of the goods, control the sorting equipment to accurately sort the goods to the corresponding position.
4. Small water treatment system
Water pump control : According to the water level, flow and other parameters, control the start and stop and speed of the water pump to achieve water transportation and distribution.
water quality monitoring and regulation : 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 6ES72121HE400XB0
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.
| Brand Name: | Siemens | Certification: | ISO9001, CE |
|---|---|---|---|
| Place of Origin: | China | Condition: | New |
| Warranty: | 1 year | Customized sourcing: | available |
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Ans. Our main products include PLCs, sensors, valves, solenoid valves, actuators, power modules, transmitters, and complete industrial automation solutions.
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Feel free to Ask questions
Siemens module 6ES72121HE400XB0
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 6ES72121HE400XB0 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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