- SIMATIC S7-1200
- Digital input SB 1221
- 4 DI, 5V DC 200kHz, Sourcing input
- SIMATIC S7-1200 Basic Controller
- Flexible thanks to wide variety of communication options
- Signal boards as alternative to signal modules for extending inputs or outputs
- Plugged directly onto front of controller
- Available as digital and analog input, output, and hybrid modules
- Communications board with RS 485 interface available
- Signal boards allow expansion of configuration without requiring additional space in control cabinet.