SIMATIC S7-200CN CPU 222 PLC
The SIMATIC S7-200CN CPU 222 PLC (6ES7212-1BB23-0XB8) is a specific model within Siemens’s but widely used S7-200 series of compact programmable logic controllers.
Key features and specifications:
- Model Series: SIMATIC S7-200 (a micro-PLC series known for its compact size and cost-effectiveness).
- Model: CPU 222.
- Order Number (MLFB): 6ES7212-1BB23-0XB8. The “XB8” typically signifies the Chinese market version of the firmware/hardware
- Integrated Digital I/O:
- Inputs: 8 Digital Inputs (24V DC).
- Outputs: 6 Digital Outputs (Relay type). Relay outputs are versatile for switching AC or DC loads directly, within their current rating.
- Communication Ports:
- 1 x RS-485 port: Supports PPI (Point-to-Point Interface) protocol, which is Siemens’ proprietary protocol for S7-200 communication. This port is used for programming, HMI communication, and networking with other S7-200 PLCs.
- Pulse Outputs (PWM/PTO): Can generate pulse train outputs (PTO) or pulse width modulation (PWM) signals, useful for simple stepper or servo motor control.
- Expandability: The CPU 222 has the capability to be expanded with additional I/O modules (digital, analog, communication modules) from the S7-200 series via its expansion bus.
- Programming Software: Programmed using STEP 7 Micro/WIN software.
