IFM Electronic AL1900 - Read and Write Data Cyclically; PROFINET: Read & Write Device Information

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ifm Device Manual IO-Link Master with PROFINET interface CabinetLine 8 Ports IP 20 (AL1900) 05 / 2018
Configuration PROFINET
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8.2.7 Read and write data cyclically
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► To check the validity of the cyclic process data, evaluate the PQI byte (→ Mapping: IO-Link
port information).
Even with an interruption of the fieldbus connection the PQI byte indicates that the process
data is valid. This can have unintended impact on the control process.
► Take suitable measures to detect an interruption of the fieldbus connection.
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8.2.8 PROFINET: Read & write device information
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I&M0 provide the user with device-specific basic information. This ensures reliable identification of the
device, the device's hardware and software components, and the manufacturer.
The datasets I&M1 to 3 offer the programmer the possibility to store project-specific information on the
device.
The programmer can access the I&M0 datasets of the slots 0 and 1 in the PROFINET projection
software via the following functions:
Information about the usable function blocks: → PROFINET: Programmers' notes (→ p. 42)
Further information about the I&M datasets: → I&M datasets (→ p. 74)