Rockwell Automation PowerFlex 755 Drive, Руководство пользователя

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Using Explicit Messaging 6-41
PowerFlex® 755 Drive Embedded EtherNet/IP Adapter User Manual
Publication 750COM-UM001A-EN-P
MicroLogix 1100 Example Scattered Write Request Data
In this example, we use the F101: data table addresses to store the
request values to be written to these 32-bit REAL (floating point)
parameters:
Figure 6.49 shows the parameter values which, in this example, have
been converted using a CPW (Copy Word) instruction—one for each
value—to correctly write their values. The CPW instruction separates
the 32-bit REAL (floating point) value (for example, F101:0 which
contains 11.1 seconds) into two 16-bit integers (for example N90:2 and
N90:3). While the values in the 16-bit integer registers represent the
actual values being written in the 32-bit floating point registers, they
will not appear correct, but the message will properly decode them.
Figure 6.49 Example Scattered Write Request Unconverted Data File
To complete message configuration, the numbers of the parameters
being written to must now be entered in the appropriate N90: data table
registers as shown in
Figure 6.50 for this example.
Figure 6.50 Example Scattered Write Request Unconverted Data File with
Entered Parameters
PowerFlex 750-Series Drive Parameter Address Write Value
536 - [Accel Time 2] F101:0 11.1 Sec.
538 - [Decel Time 2] F101:1 22.2 Sec.
575 - [Preset Speed 5] F101:2 33.3 Hz.
576 - [Preset Speed 6] F101:3 44.4 Hz.
577 - [Preset Speed 7] F101:4 55.5 Hz.