Rockwell Automation Publication SYSLIB-RM044D-EN-P - February 2017 27
PowerFlex 753 Drive (P_PF753)
Execution
The following table explains the handling of instruction execution conditions.
See the Logix5000™ Controllers Add-On Instructions Programming Manual,
publication
1756-PM010, for more information.
Programming Example
This example uses the P_PF753 instruction to control the motor of a planetary
mixer in a concrete batch plant.
In the drive command word, the Add-On Instruction uses bits .0 through .5 and
does not use the rest of the bits in the 'Out' reference parameter in the InOut
structure. These unused bit are available to use but must be configured before
moving the drive command word to the drive output assembly.
Follow these steps to import a rung to your project.
1. On the Controller Organizer, add your PowerFlex drive to the I/O
Configuration and name the drive.
2. Under Tasks, click the plus sign ( ) in front of Main Task.
3. Double-click Main_Routine to open this ladder logic routine.
Condition Description
EnableIn False (false rung) Processing for EnableIn False (false rung) is handled the
same as if the drive were Disabled by Command. The drive
outputs are de-energized and the drive is shown as
disabled on the HMI.
Powerup (prescan, first scan) Processing of modes and alarms on Prescan and Powerup
is handled by the embedded P_Mode and P_Alarm
Add-On Instructions. See their specifications for details.
On Powerup, the drive is treated as if it had been
Commanded to Stop.
Postscan (SFC Transition) No SFC Postscan logic is provided.
Bits used by
Add-On Instruction.
Bits not used by
Add-On Instruction
and available for use.
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