Rockwell-automation 1769-SM2 Compact I/O DSI/Modbus Communication Modu Manual de usuario Pagina 112

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7-10 CompactLogix Example Ladder Programs
Since CH2 and CH3 ladder routines are similar to the CH1 routine, they
are not provided.
The ladder example provided in this section is based on a 1769-SM2
module in slot 1 with five PowerFlex 4/40 drives connected to CH1 and
to CH2, and one PowerFlex 70 connected to CH3 (Figure 7.4
). The
ladder example demonstrates the following functionality for each
channel’s drives:
Send a Logic Command to control the drive (for example, start, stop).
Send a Reference to the drive and receive Feedback from the drive.
Receive Logic Status information from the drive.
Write and read parameters.
Explicit messaging (parameter read/write) capability varies between the
RSLogix software packages and controllers:
Explicit messaging can be used with enhanced CompactLogix
processors, such as the -L31, -L32E, and -L35E.
CompactLogix -L20 and -L30 processors do NOT have explicit
messaging capability.
Multi-Drive Mode
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