Siemens 6AG1221-3BD30-5XB0 Digital Input Module
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8613666084105 | |||||||
| +8613666084105 | ||||||||
| 13666084105 | ||||||||
| Add to | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||

Technical Specifications
| Parameter | Description |
|---|---|
| Product Model | 6AG1221-3BD30-5XB0 |
| Brand | Siemens |
| Product Type | SIPLUS S7-1200 SB 1221 Digital Input Signal Board |
| Base Model | 6ES7221-3BD30-0XB0 |
| Number of Digital Inputs | 4 DI |
| Number of Digital Outputs | 0 DO |
| Input Voltage | 24 V DC |
| Input Type | Current-sourcing input |
| Input Standard | IEC 61131 Type 2 |
| Input Channels | 4 inputs in one group |
| Maximum Input Frequency | 200 kHz |
| Minimum Input Current for Signal “1” | 2.9 mA |
| Typical Input Current for Signal “1” | 14 mA |
| Maximum Static Current for Signal “0” | 1.4 mA |
| Input Delay | Configurable |
| Interrupt Inputs | Supported |
| Technology Functions | Parameterizable |
| Maximum Cable Length | 50 m with shielded twisted-pair cable |
| Status Indicators | Input status LEDs |
| Backplane Bus Current | 40 mA at 5 V DC (typical) |
| Power Consumption | 1 W (typical) |
| Operating Temperature | -40°C to +60°C |
| Minimum Startup Temperature | -25°C |
| Storage Temperature | -40°C to +70°C |
| Maximum Installation Altitude | 5000 m, subject to operating-condition derating |
| Conformal Coating | SIPLUS protective coating |
| Dimensions | 38 × 62 × 21 mm |
| Weight | 0.03 kg |
FAQ
1. What is the Siemens 6AG1221-3BD30-5XB0 used for?
The Siemens 6AG1221-3BD30-5XB0 is a SIPLUS S7-1200 SB 1221 digital input signal board. It is designed to acquire 24 V DC digital signals from field devices such as proximity switches, push buttons, limit switches, and other industrial sensors.
2. How many digital input channels does this signal board provide?
This module provides four digital input channels and does not have digital output channels. All four inputs belong to the same input group.
3. What is the input voltage of the 6AG1221-3BD30-5XB0?
The module operates with 24 V DC digital input signals. When selecting field devices, ensure that their output signal characteristics are compatible with the module’s input specifications.
4. Does the 6AG1221-3BD30-5XB0 support high-speed signal acquisition?
Yes. It supports a maximum input frequency of 200 kHz, making it suitable for applications involving high-speed pulse signals and fast switching inputs, provided the wiring and signal conditions meet the manufacturer’s requirements.
5. Can the input delay be configured?
Yes. The input delay can be configured through the PLC engineering environment. Available settings include microsecond and millisecond ranges, allowing users to adapt signal filtering to different application requirements.
6. Does this module support interrupt functions?
Yes. The 6AG1221-3BD30-5XB0 supports interrupt inputs and configurable technology-related input functions. These capabilities can help the controller respond to specific signal events without relying exclusively on standard cyclic processing.
7. What should be checked if the input signal is not detected?
First, verify the 24 V DC supply, input polarity, common wiring, and field-device output. Then check the PLC hardware configuration, input-channel assignment, signal status LEDs, and configured input delay. Incorrect wiring or incompatible signal levels may prevent reliable signal detection.
8. What precautions are important when installing this SIPLUS signal board?
Install the board according to the S7-1200 system requirements and the manufacturer’s instructions. Use properly terminated wiring, maintain suitable grounding and EMC practices, and observe the specified operating temperature and environmental limits. Always disconnect power before installation or removal.
Siemens 6AG1221-3BD30-5XB0 Digital Input Module is in stock. Please contact us for a quick quote and competitive pricing.
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8613666084105 | |||||||
| +8613666084105 | ||||||||
| 13666084105 | ||||||||
| Add to | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Company Introduction
Xiamen Shengruite Trading Co., Ltd. is a company specializing in the supply of industrial PLC spare parts.
We provide high-quality PLC spare parts to customers in the global manufacturing, energy and power, chemical and other fields.
Since its establishment in 2011, after 13 years of rapid development, the cumulative global shipments have reached 223,650 pieces, with an annual output value of US$50 million.
Successfully served more than 500 customers in more than 100 countries and regions including Saudi Arabia, UAE, the United States, Europe, Africa, and Southeast Asia
Our Mission
Provide customers with the best quality PLC spare parts and the fastest delivery service to ensure that their industrial automation systems are always in the best operating condition.
We provide a 1-year warranty service, and we support returns and exchanges for any issues to ensure your rights and interests are fully protected.
We can provide detailed product images upon request, and our team can arrange warehouse photos for confirmation to ensure you have all the information you need before making a purchase.
Shipping times vary depending on your location. With the support of our 16 global warehouses, we strive to deliver orders as quickly as possible. Contact us to get an estimated delivery time for your specific location.
The minimum order quantity (MOQ) is typically one unit. However, for larger orders, please contact us for potential discounts and pricing details.
Yes, we offer competitive pricing for bulk purchases. Please reach out to our sales team with the specifics of your order to receive a custom quote.
We accept various payment methods for wholesale orders, including bank transfers (T/T), letters of credit, and other options upon agreement. For large transactions, please contact us directly for payment terms.
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We occasionally offer promotional discounts for new wholesale customers. Contact us to learn more about any current offers available for first-time buyers.
If you are unsure of compatibility with your existing setup please provide your system details and our support team can verify compatibility prior to purchase.
Returns are accepted within 30 days if the product is unused, unopened, and in its original packaging. Please note that return shipping and associated costs are the buyer\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’s responsibility.
Yes, we offer technical support for the installation and integration of our products. Our team can assist with setup, configuration, and troubleshooting to ensure a smooth installation.








