Siemens 1212C Compact central processing unit, DC/DC/relay

Product Overview

The SIMATIC S7-1200 CPU 1212C delivers compact PLC functionality with DC/DC/relay configuration for entry-level automation applications. Featuring essential onboard I/O including 8 digital inputs, 6 relay outputs rated at 2A, and integrated analog capability, this CPU provides reliable control performance with 100 KB program/data memory for small-scale automation tasks requiring robust relay switching capabilities.

Key Features

• Compact Relay Configuration: 8 DI (24V DC) + 6 DO (relay 2A) + 2 AI (0-10V DC) for essential switching control
• Fast Counter Capability: 3 inputs configurable as fast counters for high-speed counting applications
• Robust Relay Switching: 2A relay outputs for direct control of medium-power loads without external contactors
• Entry-Level Memory: 100 KB program/data memory optimized for small-scale automation applications
• Expandable Architecture: Support for up to 2 additional expansion modules for basic system growth
• TIA Portal Integration: Full compatibility with STEP 7 Basic programming environment (V13 SP1 or higher required)

Technical Specifications

• CPU Model: CPU 1212C DC/DC/Relay | Firmware: V4.6 or higher
• Dimensions: 101mm (W) × 107mm (H) × 85mm (D) | Weight: 0.311 kg
• Power Supply: DC 20.4-28.8V DC | Current Consumption: Standard for CPU plus relay load
• Digital I/O: 8 DI (24V DC, 3 configurable as fast counters) | 6 DO (relay 2A switching capacity)
• Analog I/O: 2 AI (0-10V DC) | Fast Counters: 3 inputs configurable
• Memory: 100 KB program/data memory | Expansion: Up to 2 signal modules
• Protection: IP20 | Mounting: DIN rail | Temperature: Industrial operating range

Applications & Integration

Primary Applications:

• Entry-level industrial automation requiring reliable relay switching
• Small-scale process control with direct relay control of actuators
• Building automation systems with basic HVAC control
• Simple manufacturing equipment requiring robust output switching
• Basic machine control applications with medium-power load switching

System Compatibility:

• TIA Portal and STEP 7 Basic programming environment (V13 SP1 or higher required)
• Expandable with SM 1221/1222/1223 signal modules (up to 2 modules)
• Support for 1 signal board (SB), battery board (BB), or communication board (CB)
• Maximum 3 communication modules (CM) for network expansion
• HMI device connectivity for basic operator interface requirements

Quality & Compliance

• Status: Active Product (PM300) | Origin: Germany
• EAN: 4047623402718 | UPC: 887621769031
• RoHS Compliant: Since 12.12.2013 | WEEE: Take-back obligation applies
• Export Control: AL: N / ECCN: 9N9999 | Product Class: A (Standard stock item, returnable)
• ATEX: Gas explosion protection category 3G | Protection: IP20
• REACH: Contains lead, lead oxide, 6,6'-di-tert-butyl-2,2'-methylenedi-p-cresol, and BPA above 0.1% w/w (safe when used as intended)

Package Contents

• 1 × CPU 1212C relay module (6ES7212-1HE40-0XB0), technical documentation, terminal blocks, mounting hardware

Download existing graphical data for this product:

• Product Information
• Technical Datasheet
• CPU 1212C Family Information
• Manual and Documentation