Jetter JC-120MC, User Manual

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JC-120MC Programming
10.3.2 Cyclic data interchange
This chapter covers cyclic data interchange via Jetter Ethernet system bus.
Properties of cyclic data interchange via Jetter Ethernet system bus:
Property Description
Architecture Publish/subscribe

The publishers send the data.

The subscribers receive the data.

Usage of multicast frames
Publisher 
Each publisher sends one or several publications.

Data of a publication are consistently transferred
in a frame.

The cycle time can be set for each publication.
Subscriber 
The subscriber receives one or several
publications and assigns them to the
corresponding subscriptions.

The subscriber validates the received data.
Data

Registers

Inputs

Outputs
Access time

Very short, as the network nodes access the
locally stored interchanged data.
Configuration 
In the JetSym Hardware Manager
Reach

Restricted to own subnet

Cyclic, deterministic interchange of process data

Cyclic, deterministic interchange of status information details
The JetSym Hardware Manager generates the configurations for cyclic data
interchange using the status information details and the process data of the
connected peripheral modules.
For cyclic data interchange, do not use any configuration registers or special
registers. Access to these registers can take longer or trigger further action,
which may lead to unwanted results.
Introduction
Properties
Examples of the
application
Restrictions