IFM Ecomat 300 AC1421, Device Manual

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ifm Device Manual SmartSPS AC14 with EtherNet/IP interface (AC1421, AC1422), Firmware 3.1.2 2015-11-30
Appendix Fieldbus EtherNet/IP
>
8.7.5 Acyclic data
Overview: acyclic data ..........................................................................................................................218
Acyclic data records .............................................................................................................................220
Command channels ..............................................................................................................................247
Programmers' notes: call up acyclic services .......................................................................................334
12895
With the help of acyclic data, IO devices can be parameterised or configured, or status information can
be read. The acyclic data are not automatically updated in the host controller, but have to be explicitly
requested by means of special commands (
→ Programmers' notes: call up acyclic services
(
→ page
334 )).
Acyclic data belong to the category of explicit messages and are not real-time capable.
The following acyclic data are available:

Acyclic data set
→
Overview: Acyclic data sets
(
→ page
221 )

Fieldbus command channel
→
Overview: System commands
(
→ page
250 )
→ Overview: AS-i master commands
(
→ page
269 )