Siemens 6ES7212-1BA10-0XB0 CPU | S7-200 Compact Controller

The Siemens 6ES7212-1BA10-0XB0 CPU serves as a compact controller for SIMATIC S7-200 micro PLC systems. This integrated unit combines the processor, power supply, and I/O in a single housing. The controller manages small automation tasks with straightforward programming and reliable performance.

Technical Specifications

Parameter	Specification
Product Type	Compact CPU controller
Model	CPU 212-1BA10 (Relay)
Program Memory	2 KB (integrated)
Data Memory	1 KB (integrated)
Digital Inputs	8 x 24V DC (sink/source)
Digital Outputs	6 x 24V DC / 2A (relay)
Total I/O Points	14 I/O (8 IN / 6 OUT)
Expandable I/O	Up to 2 expansion modules
Communication Port	1 x RS-485 (PPI, MPI)
Processing Time (bit)	0.37 µs (typical)
Dimensions (W x H x D)	140 x 80 x 62 mm
Weight	0.39 kg
Internal Components	1 x CPU core, 6 x relays, 1 x power supply
Energy Storage	SuperCap (100h, clock backup)
Power Supply	24V DC (20.4V – 28.8V)
Power Consumption	10W (typical)
Operating Temperature	0°C to +55°C
Storage Temperature	-40°C to +85°C
Protection Class	IP20
Mounting	DIN rail or panel
Approvals	CE, UL, CSA

Integrated I/O for Basic Control Tasks

The Siemens 6ES7212-1BA10-0XB0 includes 8 digital inputs and 6 relay outputs onboard. This built-in I/O covers typical small-machine control requirements effectively. The 24V DC inputs accept signals from pushbuttons, switches, and sensors. The relay outputs switch 2A loads for contactors and indicator lamps.

Relay Outputs for Versatile Load Switching

This CPU features six relay outputs rated at 24V DC and 2A per contact. These relays handle both AC and DC loads for maximum flexibility. The outputs provide complete electrical isolation between PLC and field circuits. Users can switch inductive or resistive loads without external interface devices.

Compact Design for Space-Sensitive Installations

The CPU measures 140 x 80 x 62 mm and weighs only 0.39 kg. This compact footprint fits easily into small control cabinets and machinery enclosures. The unit mounts on standard DIN rails or directly to backplates. Users can install the controller in tight spaces without compromising accessibility.

Expansion Capability for Flexible Systems

The controller supports up to 2 expansion modules for additional I/O capacity. This scalability allows the system to adapt to changing application needs. Users can add digital I/O, analog modules, or communication interfaces. The expansion bus connects through the side-mounted interface with simple plug-in installation.

Reliable SuperCap Energy Storage

A SuperCap provides 100 hours of data retention and real-time clock backup. This energy storage preserves critical parameters during short power interruptions. The real-time clock ensures accurate time-stamped events and scheduled operations. Users do not require a separate battery for basic data protection.

Straightforward Programming with STEP 7 Micro/WIN

Users program this CPU using STEP 7 Micro/WIN software for simple ladder logic. The programming environment offers intuitive tools for small to medium applications. The RS-485 port connects the CPU to the programming device. Users can also interface with HMIs and other PLCs via the communication port.