IFM Electronic AL1900, Device Manual

Page: 41 / 90

41
ifm Device Manual IO-Link Master with PROFINET interface CabinetLine 8 Ports IP 20 (AL1900) 05 / 2018
Configuration PROFINET
>
8.2.7 Read and write data cyclically
17372
► 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.
>
8.2.8 PROFINET: Read & write device information
22783
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 )