PACMotion VFD Syllabus
Section 9
GFK-3167B
December 2020
User Defined Function Block
–
PROFINET (Note 6)
39
13.
Starting the system
Be sure to set your VFD Parameter P1-12 to 4 for Fieldbus Control. You may wish to insert a
PNIO_DEV_COMM block (similar to below) to assure your PROFINET Controller and PNS
are communicating without issue. The Reference Variables names created in step 3 can be
used for the PNIO_DEV_COMM. The output of the PNIO_DEV_COMM can be used to
power the UDFB.
Figure 38: Check the Status of the PNS Connection
14.
Download the project to your PACSystems Controller.
Connect the PROFINET Controller to the VFD PROFINET option module. Power up the
devices and test functionality.
9.1
Setting Fieldbus Connection Timeout
Preferences
The VFD interface allows the user to set the Communication Loss Timeout and
Communication Loss Action values. These parameters are at addresses P5-05 and P5-06
respectively. The Timeout units are 1 = 0.1 sec and the range is from 0.0 (disable) to 5.0
seconds. Set these appropriately. A setting of 0.0 seconds will allow the VFD to continue
running if communications is lost.
