Title:Siemens 6ES7312‑5BD01‑0AB0 SIMATIC S7‑300 CPU312C Compact PLC |10DI/6DO 16KB MPI Integrated 24VDC
1. Product Overview
The 6ES7312‑5BD01‑0AB0 is early‑generation compact integrated CPU for Siemens SIMATIC S7‑300 series. It features onboard 10‑point 24VDC digital input / 6‑point digital output, 16 KB working memory, built‑in MPI multi‑point communication interface and integrated 24 V DC power supply. Equipped with 2‑channel 10 kHz high‑speed counter function. Adopts S7‑300 modular rack‑based installation. Program & data must be stored on external MMC micro‑memory card (MMC NOT included). Mainly used for small‑size factory automation, legacy‑equipment maintenance and retrofit spare‑parts projects.
Important lifecycle note: 6ES7312‑5BD01‑0AB0 is fully discontinued. Direct functional replacement: 6ES7312‑5BE03‑0AB0 / 6ES7312‑5BF04‑0AB0 (64KB work memory).
2. Core Advantages & Key Features
On‑board Embedded I/O 10 ×24VDC digital inputs, 6 × digital outputs; 2‑channel 10 kHz high‑speed counters for pulse‑signal acquisition.
MPI Multi‑point Communication Interface DB9 MPI port, max 187.5 kbit/s transmission rate; support PG/OP communication, S7 basic communication, global‑data communication; max 6 MPI connections, connect S7‑300 PLC, HMI and other S7‑series devices.
16KB Working Memory Sufficient for small‑scale automation control logic; no integrated load memory, external MMC card is mandatory for program storage.
S7‑300 Modular Rack System Mount on S7‑300 U‑rail rack, expandable with S7‑300 signal modules & CP communication modules, max 8 modules in single‑row rack.
Multiple Programming Languages Support LAD, FBD, STL; programmed via STEP7 V5.1 SP2 or higher software.
Wide Operating Temperature 0 ℃ ~ +60 ℃ cabinet working temperature, IP20 protection class for cabinet‑only installation.
Global Industrial Certifications CE, c‑UL‑us, RoHS compliant, fit worldwide export spare‑part business.
Remark: MMC memory card and 40‑pin front‑connector are not included in original scope, need separate purchase.
3. Technical Parameters
| Item | Specification |
|---|
| Model | 6ES7312‑5BD01‑0AB0 |
| Brand | Siemens |
| Series | SIMATIC S7‑300 CPU312C |
| Embedded I/O | 10 DI (24 VDC), 6 DO |
| Working Memory | 16 KB |
| Communication | MPI (DB9 RS485), max 187.5 kbit/s, max 6 connections |
| High‑speed Counter | 2 channels @10 kHz |
| Programming Software | STEP7 V5.1 SP2 or above |
| Power Supply | Integrated DC 24 V (19.2‑28.8 V DC) |
| Mounting | S7‑300 U‑Rack / DIN‑rail |
| Max Rack Modules | 8 modules single‑row |
| Dimension(W×H×D) | 80 mm ×125 mm ×130 mm |
| Net Weight | 0.47 kg |
| Operating Temperature | 0 ℃ ~ +60 ℃ |
| Protection Class | IP20 |
| Required Accessory | MMC micro memory card, 40‑pin front‑connector (sold separately) |
| Lifecycle | Discontinued; replacement:6ES7312‑5BE03‑0AB0 / 6ES7312‑5BF04‑0AB0(64KB) |
| Origin | Germany |
| Certification | CE, c‑UL‑us, RoHS |
4. Application Industries & Typical Scenarios
Applicable Industries
- Packaging machinery
- Conveying & logistics equipment
- Small‑size water‑treatment automation
- HVAC pump & fan control
- Textile machinery
- Old‑production‑line maintenance & spare‑parts replacement
Typical Equipment
Small‑size S7‑300 automation control cabinet, legacy‑equipment retrofit, field signal acquisition, standalone‑machine control system.
Warehouse stocking note: Mainly for obsolete‑equipment spare‑parts stocking; FOB / DDP bulk export shipment.
5. Packing & Logistics Reference
- Net weight:0.47 kg / pc
- Single carton gross weight:0.58 kg / pc
- Original individual export carton packaging.
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