Rockwell-automation 842D-60131331BXA DeviceNet Encoder User Manual Bedienungsanleitung PDF herunterladen (Seite 32)

5-6 Configuring a Scanner to Communicate with the Encoder

Figure 5.4 Edit I/O Parameters Dialog Box - COS

9. Select the type(s) of data exchange (Polled, Change of State,

and/or Cyclic). In our example, we selected Change of State.

10. Type the number of bytes that will be required for your I/O in the

Rx Size and Tx Size. See Assembly Data Format, page B-4, for

data sizes.

11. Set the scan rate:

Click Help for more information.

12. When using COS in high speed and/or high resolution

applications, it may be necessary to limit how often the device

will report to the master in order to lessen network traffic. To do

so requires either setting the hysteresis to over 10% of the

‘RESOLUTION PER REVOLUTION’ value or increasing the

‘Inhibit Time’. To increase the inhibit time to 10ms, click on the

Advanced... button under ‘Change of State/Cyclic.’ Adjust the

Inhibit Time and click OK.

Data

Exchange

Rate to set

Polled Polled Rate

Change of

State

Heartbeat

Rate

Cyclic Send Rate

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Rockwell-automation 842D-60131331BXA DeviceNet Encoder User Manual Bedienungsanleitung Seite 32