Siemens 6ES7312-1AE14-0AB0 S7-300 CPU

The Siemens 6ES7312-1AE14-0AB0 CPU 312 is an entry-level modular processor for the SIMATIC S7-300 automation system, designed for standalone machine control and small-scale industrial automation within a single central rack installation.

Key Technical Specifications

• Manufacturer: Siemens
• Part Number: 6ES7312-1AE14-0AB0
• Product Series: SIMATIC S7-300
• CPU Model: CPU 312
• Work Memory: 32 KB integrated work memory (operation requires a SIMATIC Micro Memory Card / MMC for load memory and retentive data storage)
• Integrated I/O: None (standard modular CPU; digital and analog I/O require external S7-300 signal modules)
• Communication Interface: 1x MPI (RS-485) interface supporting programming (PG) and operator panel (OP/HMI) communication
• Rack Expansion: Single central rack configuration only; supports up to 8 SM, FM, or CP modules in slots 4–11 (expansion racks are not supported on this model)
• Engineering Software Requirements: STEP 7 V5.5 SP1 or higher (with HSP 218), or TIA Portal V12 or higher

Applications and System Configuration

This controller is engineered for standalone machine control and small-scale industrial automation without distributed fieldbus requirements. Because expansion racks are not supported on this CPU, supported signal, function, and communication modules must observe central rack configuration limits. Verify system slot capacity, memory requirements, and programming architecture prior to selection.

Product Lifecycle and Procurement Notice

The SIMATIC S7-300 product family is a mature, legacy platform from Siemens. This unit is offered primarily for replacement, maintenance, and industrial spare parts sourcing. Confirm the exact hardware revision, firmware compatibility, and MMC memory card requirements for your application prior to order confirmation.

Request a Quote

Submit an inquiry with part number 6ES7312-1AE14-0AB0, required quantity, destination country, and any relevant system details. Availability, unit condition, pricing, lead time, warranty terms, and shipping options will be confirmed individually in the quotation.

Technical parameters are provided for model identification and preliminary engineering reference. Always verify the physical unit nameplate and official manufacturer documentation before installation.