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Devicenet – Lenze EMF2175IB User Manual

Page 95

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DeviceNet

9

Technical data

9-3

L

BA2175 EN 2.0

9.5.1

Communication times

Note!

The CAN bus communication times depend on the following:

Processing time in the controller

Baud rate

Data priority

Bus load

More information about bus access control can be obtained from corresponding literature
specialised on Controller Area Networks.

9.5.1.1

Processing times in the controller

Processing times for 820X controllers

The processing times for 8200 controllers differ from the times for the 821X/822X/8200 vector series.

In opposite to the 821X/822X/824X series, which have parallel process data processing, the 8200
series process process and parameter data sequentially. Therefore the time needed to respond
process data depends on previous actions.

The processing time needed for telegrams also depends on the actual value conditioning (process
data from controller). If these data (status word, actual frequency) are not required, they can be
deactivated with the control word ” Bit 15” (PE inhibit).

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