Description
The Siemens SIMATIC S7-300 CPU 312C (Order Nos. 6ES7312-1AE14-0AB0 / 6ES7312-5BF04-0AB0) is a compact, cost-effective programmable logic controller CPU with integrated digital I/O and high-speed counter functions. Designed for small to medium automation tasks, it features an onboard MPI interface for programming and HMI communication, plus built-in technological functions such as frequency measurement, pulse-width modulation (PWM), and counting — eliminating the need for additional specialized modules in many applications.
Key Features
- Integrated I/O: 10 DI (24 V DC) + 6 DO (24 V DC, 0.5 A)
- High-Speed Counter: 1 channel up to 30 kHz
- Technological Functions: PWM output, frequency measurement
- Interface: MPI (Multipoint Interface) for PG/OP/networking
- Work Memory: 32 KB (6ES7312-1AE14-0AB0) / 64 KB (6ES7312-5BF04-0AB0)
- Micro Memory Card (MMC): Required for operation (not included)
- Programming Software: STEP 7 V5.5+ or TIA Portal (with appropriate options)
- Country of Origin: Germany
Technical Specifications
Parameter | 6ES7312-1AE14-0AB0 / 6ES7312-5BF04-0AB0 |
|---|---|
CPU Series | SIMATIC S7-300, CPU 312C (Compact) |
Digital Inputs (onboard) | 10 × DI 24 V DC (sink/source) |
Digital Outputs (onboard) | 6 × DO 24 V DC (0.5 A, short-circuit protected) |
Analog I/O | None onboard (expandable via SM modules) |
High-Speed Counter | 1 × 30 kHz (for incremental encoder) |
PWM / Pulse Output | Yes, 1 channel |
Work Memory | 32 KB / 64 KB |
Load Memory | On MMC (order separately, min. 64 KB) |
Communication Interface | MPI (max. 12 connections) |
Scan Time (1K bit instr.) | ~0.2 ms |
Power Supply Requirement | 24 V DC (via PS307 or rack backplane) |
Operating Temperature | 0 °C to +60 °C |
Dimensions (W×H×D) | 40 mm × 125 mm × 130 mm |
Weight | Approx. 0.3 kg |
Standards | CE, UL, FM, cULus, RoHS |
💡 Note: Both order numbers represent the same CPU generation with minor firmware/hardware revision differences — 6ES7312-5BF04-0AB0 is the later version with slightly larger work memory. An MMC card (e.g., 6ES7953-8LF30-0AA0 64KB or 6ES7953-8LG30-0AA0 128KB) must be purchased separately.
Warranty & After-Sales
- Factory new units: 12 months warranty
- Refurbished units: 3-6 months warranty
- Technical support for configuration and installation
- MMC card selection assistance
- STEP 7 / TIA Portal project setup guidance
- Commissioning and diagnostics support available
Delivery Time
- Standard delivery: 3-5 working days
- Express shipping available upon request
Why Choose Our Store
- Genuine Siemens SIMATIC components
- Global supply network with competitive pricing
- Expertise in S7-300 system integration & migration
- Comprehensive technical documentation (manuals, GSD files)
- Responsive customer service and support
Applications
- Small machine and process control
- Packaging, labeling, and bottling lines
- Conveyor and material handling systems
- Pump and fan control with simple interlocks
- Educational/training rigs
- Retrofit of older S5 or relay-based systems
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