Separate cyclic IO-Link process values from acyclic parameter or diagnostic exchanges in an interface proposal.
Name the exchange category
ifm distinguishes cyclic process data from acyclic exchanges in IO-Link, alongside events. A parameter read and a periodically transferred process value follow different data contracts. Primary reference: IO-Link exchange categories.
An interface list should identify which category contains each required field. The word digital does not prove that every parameter appears in the cyclic payload, or that every diagnostic arrives as an ordinary process reading.
A hypothetical field inventory
Imagine a proposed system needs an operating value each cycle and a component serial number when a device is commissioned. Put those needs in separate worksheet rows. Copying the serial number into the expected cyclic layout would be unsupported unless the actual device description defines that layout.
Now add a fault indication. Record whether it is represented by process status, an event or another stated mechanism on the selected device. The controller consumer should retain the documented category and meaning rather than search an arbitrary byte because the network connection is active.
Preserve the actual map
Keep device and master identities, the accepted process layout, acyclic access definitions and relevant events with the integration scope. Ask which fields the selected control software actually stores or exposes. A supported link does not establish a complete application record.
This guide gives no generic IO-Link cycle time or configuration procedure. No IO-Link interface is claimed on HM equipment. The output of the review is a category-specific field contract, allowing commissioning identity, periodic values and diagnostic occurrences to be assessed according to the evidence each requires.
Customer Questions
Is every parameter cyclic process data?
Use the actual device layout.
Does communication prove all fields are stored?
Consumer behavior must be defined.
Does this assign IO-Link to an HM machine?
It describes a hypothetical interface proposal.
Primary References
These references support the technical principles discussed in this guide. The worked examples and review questions are educational.
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