Lenze E84DGFCG Bedienungsanleitung PDF herunterladen (Seite 41)

Data transfer

Communication channels

Lenze · Decentralised frequency inverter 8400 motec (EtherNet/IP™ option) · EDS84DMOTEIP EN 2.0 - 10/2013

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7.1 Communication channels

EtherNet/IP transmits parameter data and I/O data between the host system (scanner) and the

drives (adapters) connected to the fieldbus. The data are transmitted via corresponding

communication channels depending on their time-critical behaviour.

The I/O data channel transmits I/O data by means of "implicit messages".

• The inverter is controlled by means of the I/O data.

• The transmission of I/O data is time-critical.

• I/O data are transmitted cyclically between the host system (scanner) and the drives (adapters)

(permanent exchange of current input and output data).

• The host system (scanner) has direct access to the I/O data (the data are, for example, stored

directly in the I/O area).

• To the scanner, up to 10 data words (max. 20 bytes) can be sent.

• From the scanner, up to 8 data words (max. 16 bytes) can be sent.

• I/O data are not stored in the inverter.

• I/O data are e.g. setpoints, actual values, control and status words

The parameter data channel transmits parameter data by means of "explicit messages".

• The transmission of parameter data is usually not time-critical.

• Examples of parameter data are operating parameters, motor data, and diagnostic information.

• The parameter data channel provides access to all Lenze codes.

• Parameter changes must be saved via code C00002 of the Inverter Drive 8400 motec.

 Note!

The terms "input" and "output" refer to the point of view of the scanner:

• Input data is produced by the adapter and consumed by the scanner.

• Output data is produced by the scanner and consumed by the adapter.

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Lenze E84DGFCG Bedienungsanleitung Seite 41