User`s manual
4-22 Motion Mate™ DSM314 for Series 90™-30 PLCs User's Manual
–
January 2001 GFK-1742A
4
P235 = Axis 2 Incremental distance
P242 = Axis 3 Incremental distance
P250 = Axis 4 Incremental distance
The incremental distance represents the total actual position change that will occur from the point
where the follower is disabled until it stops.
A configuration of Abs Position is not supported in the present DSM314 firmware. Default: Stop
5.33
Ramp Makeup Acceleration.
Follower Ramp Makeup Acceleration (uu/sec
2
). Specifies
the acceleration used to:
•
Accelerate the follower axis to match master velocity after the follower is enabled
(sector AB in Figure 4-1 ),
•
Make up the master command counts lost during follower acceleration (sector BC and
DE in Figure 4-1),
•
Decelerate to a stop after the follower is disabled (sector FG in Figure 4-1).
0
Time
Velocity
Follower
Disabled
R
amp Makeup
T
ime
A
B
C
D
E
F
G
Figure 4-1. Velocity profile during the follower ramp cycle
5.34
Ramp Makeup Mode.
Choices are Makeup Time or Makeup Velocity, explained below.
•
Makeup Time Mode
– in this mode the makeup process takes the amount of time specified
by Ramp Makeup Time parameter (refer to Figure 4-1). This is the default mode.
•
Makeup Velocity Mode
– This mode is reserved for future use.
5.35
Ramp Makeup Time.
Follower Acceleration Ramp Makeup Time (milliseconds). Specifies
the time in milliseconds used to make up the master command counts lost during a follower
acceleration ramp. If the distance correction is not possible in the configured makeup time
(because the value is too small) then the correction time is longer and a warning error is reported.
This setting only has an effect when the Ramp Makeup Mode is set to Makeup Time.
If an acceleration ramp without any correction for lost counts is desired, Makeup Time should be
set to 0. In this case, the motor will synchronize velocity relative to the master, but will not attempt
to correct for any positional deviation that occurs while the follower axis is accelerating.
Makeup time has a minimum value of 10, so for values entered in the range of 1…10 use 10
instead.
Default: 0.