Configuring
4.11 Planning subnets
S7-300, CPU 31xC and CPU 31x: Installation
Operating Instructions, Edition 08/2004, A5E00105492-05
4-63
4.11.6
Actuator/sensor interface (ASI)
Actuator/Sensor Interface (ASI)
Implementation using communication processors (CP).
The ASI, or Actuator/Sensor Interface, represents a subnet system on the lowest process
level for automation systems. It is designed especially for networking digital sensors and
actuators. The maximum data volume is 4 bits per slave station.
S7-300 CPUs require communication processor for the ASI connection.