Board mở rộng SB 1221
Giới thiệu chung về SB 1221:
- Digital inputs as a supplement to the integral I/O of SIMATIC S7-1200 CPUs
- Can be plugged directly into the CPU
Ứng dụng của SB 1221:
The SB 1221 digital input signal boards enable connection of the controller to digital process signals.
SB 1221 được thiết kế với:
The Signal Boards are plugged straight into the holder on the front of the S7-1200-CPU.
- Mounting: Signal Boards are plugged direct into the SIMATIC S7-1200-CPU and linked electrically and mechanically with the CPU in this way.
- The installation dimensions of the CPU remain unchanged.
- On all Signal Boards, replacement is facilitated by removable terminals ("permanent wiring").
Chức năng của SB 1221:
The SB 1221 digital input/output signal board converts the level of the external digital signals from the process to the internal signal level of the S7-1200 Controller.