Datalogic AMT58*-PN Series, Инструкция по эксплуатации

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AMT58x-PN ProfiNET®
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To configure the IO device (Figure 35) double click the Interface slot
X1 of the module to open the interface properties dialog box. The
Properties – Interface property sheet will appear. Enter the
Synchronization tabbed page and select the Not synchronized value
in the drop-down menu of the Synchronization role item. Confirm
pressing the OK button.
Figure 35 - Setting the Not synchronized role of the IO device
11.3 Real-Time class 3 (IRT_TOP) (RT3)
Isochronous data exchange with PROFINET is defined in the
Isochronous-Real-Time (IRT) concept. IRT communication is always
clock synchronized and only possible within an IRT domain.
Isochronous realtime communication differs from realtime
communication mainly in its isochronous behavior: the start of a bus
cycle can deviate by a maximum of 1 µs (jitter is less then 1 µs).
This communication is required, for example, for high-accuracy
closed-loop control tasks.
Only industrial IRT switches can be used.
Typical cycle time 1 ms or less. All network components must
support PROFINET IRT frame priority processing. Position values
are captured with an accuracy of +/- 1 µs or better, with respect to
the highly accurate bus clock.