6ES7212-1BB23-0XB8 SIEMENS Redundant Power Supply Module -40°C To 85°C 110 V
6ES7212-1BB23-0XB8 Description
The 6ES7212-1BB23-0XB8 is a compact CPU module belonging to the SIMATIC S7‑200 CN series by Siemens, designed for small‑scale automation and logic control applications. It integrates a high‑speed microprocessor, power supply, digital inputs, and digital outputs in a single unit, providing reliable and cost‑effective control for compact machinery and simple process systems. This CPU supports ladder logic, function block, and statement list programming, with integrated communication ports for easy connection to HMI, PC, or expansion modules.
6ES7212-1BB23-0XB8 Key Features
- Compact all‑in‑one CPU with integrated power supply, I/O, and processing unit
- 8 digital inputs and 6 digital transistor outputs for direct field device connection
- High processing speed with short cycle times for responsive real‑time control
- Integrated RS‑485/PPI communication port for programming, HMI connection, and networking
- Supports up to 7 expansion modules for flexible I/O and function expansion
- Wide power supply range for stable operation in industrial environments
- Non‑volatile memory for program and data retention without battery
- LED indicators for power, run/stop mode, I/O status, and system diagnostics
- User‑friendly programming via STEP 7‑Micro/WIN software
- Rugged construction for harsh industrial environments
6ES7212-1BB23-0XB8 Materials & Applications
Materials
- Housing: High‑strength flame‑retardant engineering plastic (UL94 V‑0)
- Internal PCB: Industrial‑grade FR‑4 glass epoxy circuit board
- Terminals: Nickel‑plated screw terminals for reliable wiring
- Internal components: Industrial‑grade microprocessor, capacitors, and optocouplers
- Cooling: Natural convection cooling without fan
Typical Applications
- Small packaging machines, labeling machines, and feeding equipment
- Conveyor systems, hoists, and material handling machines
- Small pumps, fans, compressors, and HVAC control
- Textile machinery, food processing, and light assembly lines
- Environmental control, water treatment, and small boiler control
- Building automation: access control, lighting, and monitoring systems
- Educational and training equipment for PLC programming
6ES7212-1BB23-0XB8 Important Parameters
| Parameter |
Specification |
| Part Number |
6ES7212-1BB23-0XB8 |
| Brand |
Siemens |
| Series |
SIMATIC S7‑200 CN |
| Product Type |
Compact CPU Module |
| Supply Voltage |
AC 85 … 264 V (50/60 Hz) |
| Digital Inputs |
8 points, DC 24 V, sink/source type |
| Digital Outputs |
6 points, transistor (DC 24 V) |
| Output Current per Point |
0.75 A |
| Working Memory |
8 KB |
| Data Memory |
5 KB |
| Retentive Memory |
EEPROM, no battery required |
| Instruction Execution Time |
0.37 µs per basic instruction |
| Communication Port |
1 × RS‑485 (PPI, MPI, Modbus RTU) |
| Expansion Capability |
Max. 7 expansion modules |
| Isolation |
Optocoupler isolation between I/O and system |
| Mounting |
35 mm DIN rail |
| Operating Temperature |
0 … +55 °C |
| Storage Temperature |
-40 … +70 °C |
| Humidity |
5 … 95 % RH (non‑condensing) |
| Dimensions (W×H×D) |
90 × 80 × 62 mm |
| Weight |
Approx. 0.32 kg |
| Certifications |
CE, UL, cUL, RoHS |
| Status |
Legacy / Discontinued |
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