84 EZMotion User/Programming Guide
www.controltechniques.com Revision: A8
connector.
Figure 84: Virtual Master View
Enable Virtual Master Check Box
Enable Virtual Master check box (VirtualMaster.VirtualMasterEnable) by default is clear. Select the check box to enable the virtual
master feature.
Virtual Master Setup Group
Distance
Distance (VirtualMaster.Dist) is the incremental distance virtual master will move, in user units, if the virtual master is initiated as an
index.
Velocity
Velocity (VirtualMaster.Vel) is the maximum virtual velocity that will be attained by the virtual master. This parameter is in user units.
Acceleration
Acceleration (VirtualMaster.Accel) is the acceleration rate, in user units, that the virtual master will use to accelerate. This parameter
is used when in either jog or indexing mode.
Deceleration
Deceleration (VirtualMaster.Decel) is the deceleration rate, in user units, that the virtual master will use to decelerate in either jog or
index mode.
Virtual Master Conversion Ratio Group
Scaling
Converts the user units distance into virtual counts.
VirtCnts
The numerator (top value of the scaling fraction) is the VirtualMaster.CharacteristicLength. The characteristic length is the number of
virtual counts that will be generated per the distance, in user units, defined by the denominator (bottom number of the scaling
fraction).
Distance (UserUnits)
The denominator (bottom value of the scaling fraction) is VirtualMaster.CharateristicDistance, in user units, and is used with
VirtualMaster.CharacteristicLength to create the virtual master conversion ratio.
If the user sets the numerator to 10,000 and the denominator to 1 revs, then 10,000 virtual counts will be sent out when the virtual
master produces 1 rev of virtual motion.
Feedrate Group
FeedRate Override
This parameter (VirtualMaster.FeedRateOverride) is used to scale the Virtual Master counts. It can be described as “scaling in real
time”. The default setting of 100% will allow all counts to occur in real time. A seeing of 50% will scale time so that all counts are half
as fast as they are at 100%. A setting of 200% will scale time so that all count run twice as fast as they would at 100%. Feed Rate
Override is always active, and this parameter may be modified via Modbus, Ethernet, or in a program.
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