The analog input module converts analog signals from the process to digital signals for internal processing by the fail-safe SIMATIC S7 CPUs.

The safety functions required for fail-safe operation are integrated in the module.

The following functions are available:

• Resolution 15 bits + sign.
• Measuring ranges:
  • 0 to 20 mA or
  • 4 to 20 mA or
  • 4 to 20 mA (HART)
• Interrupt capability;
  the module sends diagnostic interrupts to the CPU of the controller.
• Diagnostics;
  the module sends extensive diagnostic information to the CPU.