Siemens Central Processing Unit Module 6ES72881SR600AA2
The Siemens Central Processing Unit Module 6ES72881SR600AA2 belongs to the standard PLC of the S7200 SMART series, which is specifically designed for industrial automation control. The following is a detailed description based on the available information:
- Model Confirmation and Technical Parameters
According to the search results, there may be a clerical error in the model 6ES72881SR600AA2 provided by the user. In Siemens’ official documents and information from authorized dealers, the standard order number of this module is 6ES7 2881SR600AA0 (discontinued) or 6ES7 2881SR600AA1 (successor model). Its core parameters are as follows:
Input and Output Configuration: 36 channels of 24V DC digital inputs (sink/source type), 24 channels of relay outputs (2A contacts, supporting AC/DC loads).
Power Supply Range: AC 85264V (4763Hz) or DC 20.428.8V, with a builtin 3A slowblow fuse.
Storage Capacity: 30KB program memory, 20KB data memory, 10KB retentive memory, supporting the expansion of 6 modules and 1 signal board.
Communication Interface: Integrated with 1 Ethernet port (10/100Mbps) and 1 RS485 serial port, supporting protocols such as PROFINET and Modbus RTU.
Performance Characteristics: The processing speed reaches 0.15μs/instruction, supporting 4 highspeed counters (singlephase 200kHz) and 3axis linear interpolation (firmware V2.7 and above are required).
- Compatibility and Software Support
- Firmware and Programming Software:
Model 0AA1: Supports the latest firmware V2.8, and needs to be programmed with STEP 7Micro/WIN SMART V2.8, adding functions such as override control, motion axis group, and custom Web interface.
Model 0AA0: Only supports firmware V2.5 and below, and cannot be upgraded to the new version. It has been discontinued.
- Expansion Modules:
Can be connected to digital, analog, communication and other expansion modules (such as EM DR08, EM AE04), with a maximum support of 256bit input/output.
The signal board (such as SB CM01) can expand the RS232 or an additional RS485 interface.
III. Price and Supply Status
Market Quotation: Depending on different channels, the price of brandnew genuine products is approximately 7602000 yuan (domestic in China). For the US market, the quotations of local dealers should be referred to.
Supply Situation: The 0AA0 model has been discontinued, and only spare parts are available; the 0AA1 is the current mainstream model and can be purchased through authorized dealers.
- Alternative Models and Upgrade Suggestions
If higher performance or longterm supply is required, the following alternative solutions can be considered:
- S7200 SMART SR60 (0AA1):
It is fully compatible with the 0AA0 model, supports the latest firmware and functions, and is recommended as the priority choice.
- S71200 Series:
Such as CPU 1214C, which supports PROFINET, more communication protocols, and expansion capabilities, and is suitable for complex automation projects.
- Genuine Product Verification:
The product packaging should have a Siemens anticounterfeiting label, and the serial number can be verified through the official website or customer service.
- Precautions
- Firmware Upgrade: After the 0AA1 model is upgraded, it cannot be downgraded, and the project compatibility needs to be ensured.
- Environmental Requirements: The operating temperature is 20°C to +60°C, and the humidity is 5%95% (without condensation), which is suitable for industrial environments.
- Installation Specifications: It is recommended to use a CAT5e shielded cable to connect to the Ethernet, and a PROFIBUS network cable for RS485 communication.
