Hmi-To-Cpu Communication - Siemens SIMATIC S7 System Manual

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HMI-to-CPU communication

The CPU models CPU CR20s, CPU CR30s, CPU CR40s, and CPU CR60s have no

Ethernet port and do not support any functions related to the use of Ethernet

communications.

The following requirements must be considered when setting up communications between

CPUs and HMIs:

● Configuration/Setup:

– The CPU must be configured with an IP address.

– The HMI must be setup and configured to connect with the IP address of the CPU.

– No Ethernet switch is required for one-to-one communications; an Ethernet switch is

The rack-mounted CSM1277 4-port Ethernet switch can be used to connect your CPUs

and HMI devices. The Ethernet port on the CPU does not contain an Ethernet switching

● Supported functions:

– The HMI can read/write data to the CPU.

– Messages can be triggered, based upon information retrieved from the CPU.

– System diagnostics

S7-200 SMART

System Manual, V2.3, 07/2017, A5E03822230-AF

required for more than two devices in a network.

The CPU supports Ethernet communication

connections to HMIs.

Communication

8.4 Ethernet

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Simatic s7-200 smart