Small Machine Automation Solution – Siemens 6ES7212-1BB23-0XB8 | SIMATIC S7-200 CPU 212C
The Siemens 6ES7212-1BB23-0XB8 is a CPU 212C Compact Unit from the SIMATIC S7-200 series — a proven micro-PLC platform engineered for cost-effective, space-saving automation in small to mid-scale industrial applications. With integrated I/O, onboard 24 VDC power, and a compact DIN-rail footprint, this unit delivers reliable control where panel space and budget are both constrained.
Where This Product Is Used
The 6ES7212-1BB23-0XB8 is widely deployed across industries where compact, standalone control is required:
- OEM Machine Builders — embedded control for single-axis or simple multi-axis machines
- Packaging Machinery — sequence control for filling, sealing, and labeling lines
- Building Automation — HVAC control, pump management, and lighting logic
- Water & Wastewater — small pump stations, level control, and dosing systems
- Food & Beverage — conveyor interlocking, temperature monitoring, and batch control
- Textile & Printing — tension control, register mark detection, and web handling
- Agricultural Equipment — irrigation control, grain handling, and environmental monitoring
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 6ES7212-1BB23-0XB8 |
| Series | SIMATIC S7-200 |
| CPU Type | CPU 212C |
| Form Factor | Compact Unit (integrated I/O) |
| Digital Inputs | 8 × DI (24 VDC) |
| Digital Outputs | 6 × DO (Transistor, 24 VDC) |
| Supply Voltage | 24 VDC |
| Program Memory | 4 KB |
| Data Memory | 2 KB |
| Communication Port | 1 × RS-485 (PPI/MPI) |
| Expandable | Yes — up to 2 expansion modules |
| Real-Time Clock | Optional (via cartridge) |
| Mounting | DIN rail / panel mount |
| Protection Rating | IP20 |
| Operating Temperature | 0 °C to +55 °C |
| Weight | Approx. 210 g |
| Dimensions (W×H×D) | 90 × 80 × 62 mm |
Why Engineers Specify This Model
- Integrated I/O — 8 DI + 6 DO onboard eliminates the need for a separate I/O module in small applications
- Transistor outputs — fast switching, suitable for PWM and high-frequency control signals
- Compact footprint — fits in tight control panels without sacrificing functionality
- Proven S7-200 ecosystem — extensive library of function blocks, HMI compatibility (TP070, TP170), and STEP 7-Micro/WIN programming
- Expandable architecture — add analog, digital, or communication modules as application grows
- Low total cost of ownership — minimal wiring, fast commissioning, long service life
Complete System Bill of Materials
For a complete S7-200 control system based on the 6ES7212-1BB23-0XB8, consider the following components:
- 6ES7212-1BB23-0XB8 — CPU 212C Compact Unit (this item)
- 6ES7221-1BF22-0XA0 — EM 221 Digital Input Expansion Module (8 × DI)
- 6ES7222-1BF22-0XA0 — EM 222 Digital Output Expansion Module (8 × DO)
- 6ES7231-0HC22-0XA0 — EM 231 Analog Input Module (4 × AI)
- 6ES7232-0HB22-0XA0 — EM 232 Analog Output Module (2 × AO)
- 6ES7272-0AA30-0YA1 — STEP 7-Micro/WIN Programming Software
- 6ES7901-3CB30-0XA0 — PC/PPI Cable (USB)
- 6ES7297-1AA23-0XA0 — Memory Cartridge (optional)
- 6AV6640-0CA11-0AX0 — TP177 micro HMI Panel (optional)
Compliance & Industry Standards
- CE Marking — EU Low Voltage and EMC Directives
- UL Listed — UL 508 (Industrial Control Equipment)
- IEC 61131-2 — Programmable Controllers Hardware Standard
- ATEX / IECEx — consult Siemens for hazardous area variants
- RoHS Compliant
Quality Assurance & Sourcing
At Konmask.com, every Siemens 6ES7212-1BB23-0XB8 unit is:
- Sourced from verified Siemens-authorized distributors or certified secondary-market suppliers
- Inspected for physical integrity, label authenticity, and firmware version prior to dispatch
- Packaged in anti-static ESD-safe materials with full traceability documentation
- Backed by our 12-month replacement warranty against manufacturing defects
- Supported by pre-sales technical consultation for system compatibility verification
How to Source This Part
- Click Add to Cart or Request a Quote on this page
- Email us at support@konmask.com with your project requirements
- Call / WhatsApp: +0086 19859288691 for urgent or bulk orders
- Provide your delivery address — we ship globally with DHL, FedEx, and UPS
- Lead time: In-stock units ship within 1–3 business days; sourced units within 5–10 business days
Application-Specific FAQ
Q: Can the 6ES7212-1BB23-0XB8 control a servo drive directly?
A: The transistor outputs support pulse-train output (PTO) for basic open-loop stepper/servo positioning. For closed-loop servo control, pair with a Siemens SINAMICS drive and use the USS protocol over RS-485.
Q: Is this CPU compatible with PROFIBUS?
A: Not natively. Add the EM 277 PROFIBUS-DP module (6ES7277-0AA22-0XA0) to connect the S7-200 to a PROFIBUS network.
Q: What HMI panels work with this CPU?
A: Compatible HMIs include the Siemens TP070, TP170, OP77B, and third-party panels supporting PPI protocol over RS-485.
Q: Can I use STEP 7 (TIA Portal) to program this unit?
A: No. The S7-200 series requires STEP 7-Micro/WIN (v4.0 SP9 or later). TIA Portal supports S7-300/400/1200/1500 only.
Q: Is the 6ES7212-1BB23-0XB8 still in production?
A: The S7-200 series has reached end-of-sale. Siemens recommends migrating to the SIMATIC S7-1200 (e.g., CPU 1211C). Konmask.com maintains stock of new and refurbished S7-200 units to support legacy systems.
Q: Do you provide a datasheet or wiring diagram?
A: Yes — contact us at support@konmask.com and we will provide the official Siemens datasheet, wiring diagram, and system manual for this CPU.
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Contact: support@konmask.com | +0086 19859288691
