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S7-300 Automation System, Hardware and Installation: CPU 31xC and CPU 31x
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Point-to-Point communication is no subnet in the common sense, because only two
stations are interconnected.
For this type of communication you require PtP communication processors (CP).
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Industrial Ethernet in an open multivendor communication system represents the
SIMATIC network at the process and cell level. Industrial Ethernet is suitable for
fast and high-volume data exchange and offers offsite networking options via
gateway.
With S7-300 CPUs, you can implement Industrial Ethernet connections only with
the help of communication processors.
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The ASI, or actuator/sensor interface, represents a subnet system on the lowest
process level for automation systems. It is used especially for networking digital
sensors and actuators. The maximum data volume is 4 bit per slave station.
With S7-300 CPUs, you can connect to an ASI only with the help of communication
processors.
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For your MPI network configuration, we recommend you use the same network
components as in a PROFIBUS DP network configuration. The same configuration
rules apply in this case.
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on communication can be found in the &RPPXQLFDWLRQZLWK6,0$7,&manual.
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