CODESYS PROFINET PROFINET (Process Field Network) is an industrial Ethernet standard widely used in the field of manufacturing and process automation. It is managed by the user organization PI (PROFIB

PROFINET Protocol PROFINET uses the IEEE 802.3 (Ethernet) based PROFINET RT protocol for cyclic real-time I/O communication and RPC (Remote Procedure Call) via UDP/IP for acyclic services. Any kind or

Functionality A PROFINET Controller opens a separate connection (AR = Application Relation) to each individual PROFINET Device for the purpose of data exchange, parameterization, and diagnosis. The de

Establishing a Connection The connection is established in several steps By means of a DCP identify request, the controller scans the network for a PROFINET Device with the defined station name. The c

PROFINET Diagnosis This chapter describes how the diagnosis mechanisms from PROFINET can be used in CODESYS . The detection and correction of system-related malfunctions (for example, caused by firewa

Diagnosis Database Every error that occurs in a PROFINET Device (for example, of type "broken cable" or "power surge") is stored in a local diagnosis database in the PROFINET Device. The error is also

Alarms In the case of a change to the entries of the diagnosis database, the PROFINET Device sends an alarm to the PROFINET Controller. This immediately signals the coming or going of a malfunction. T

Validity of I/O Data For both incoming and outgoing data, PROFINET devices (Controller and Device) send a status byte in submodule granular form, which marks the I/O data as valid or invalid. From an

Module/Submodule Status The SubmoduleState is a status word that indicates for each individual submodule the presence of diagnosis entries or other malfunctions such as a corrupt configuration. In thi

FAQ Question Answer When a PROFINET Device or a Module is marked red (error), does that affect other devices or modules? No. They are not affected during a data exchange. Is a diagnosis in the field d