The SB 1231 analog input signal board enables the connection of the controller to analog signals of the process.

This provides users with the following advantages:

• Optimal adaptation:
  With analog signal boards, users can optimally adapt their controllers even to more complex tasks.
• Direct connection of sensors:
  Up to 11 bit resolution and different input ranges permit the connection of sensors without additional amplifiers.
• Flexibility:
  If the task is expanded subsequently, the controller can be upgraded. Updating of the user program is extremely simple.
• Use where space is limited:
  The signal boards are directly plugged into the CPU, enabling the controller to be expanded without taking up any additional space.