Rockwell Automation Allen-Bradley 842D, Руководство пользователя

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6-2 Using DeviceNet Explicit Messaging
In this example a value is sent to the preset attribute in the encoder.
The encoder stores the preset value sent in non-volatile memory.
Storing the preset value applies the preset value to the encoder
position value.
The following program fragment sends an explicit message and
confirms the message reception. The N20 user defined integer file is
used to hold message data:
Figure 6.1 1747SDN Explicit Messaging Example