Shielded cables increase robustness and switches with management functions facilitate network diagnostics and allow the network topology to be captured as desired for controlling a production line or machine. Process automation requires increased availability, which can be achieved through media and system redundancy. With Conformance Class C (CC-C), positioning systems can be implemented with additional bandwidth reservation and application synchronization.įor a device to adhere to Conformance Class B, it must communicate successfully via Profinet, have two ports (integrated switch), and support SNMP.For Conformance Class D (CC-D), Profinet is used via Time-Sensitive Networking (TSN).Ĭonformance Class C devices additionally communicate via Profinet IRT.The same functions can be achieved as with CC-C. The Remote Service Interface (RSI) was introduced for this purpose.įunctionalities of Profinet Conformance ClassesĪ Profinet system consists of the following devices: : 3 In contrast to CC-A and CC-B, the complete communication (cyclic and acyclic) between controller and device takes place on Ethernet layer 2.
The IO-Controller, which controls the automation task.The IO-Device, which is a field device, monitored and controlled by an IO-Controller.The IO-Supervisor is software typically based on a PC for setting parameters and diagnosing individual IO-Devices.Ī minimal Profinet IO-System consists of at least one IO-Controller that controls one or more IO-Devices.Īn IO-Device may consist of several modules and sub-modules.In addition, one or more IO-Supervisors can optionally be switched on temporarily for the engineering of the IO-Devices if required. If two IO-Systems are in the same IP network, the IO-Controllers can also share an input signal as shared input, in which they have read access to the same submodule in an IO-Device.
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