Rockwell-automation 5730 DriveLogix5730 Controller for PowerFlex 700S Manuel d'utilisateur Page 102

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5-10 Communicating with Devices on a Serial Link
If you choose one of the standard polling modes
The master station polls the slave stations in this order:
1. all stations that are active in the priority poll array
2. one station that is inactive in the priority poll array
3. the specified number (normal poll group size) of active stations in the
normal poll array
4. one inactive station, after all the active stations in the normal poll array
have been polled
Use the programming software to change the display style of the active
station array to binary so you can view which stations are active.
Example 3: DriveLogix
Controller to a Bar Code
Reader
In the following example, a workstation connects to a bar code reader. A bar
code reader is an ASCII device, so you configure the serial port differently
than in the previous examples. Configure the serial port for user mode,
rather than a DF1 mode.
ahw0921.eps
scanner
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