Digital Dream Standalone Motion Controller DDCS V3.1
DDCS V3.1 Users Manual
Page -66
A) #77: In the Automatic control mode,the FRO is still can determin the feeding speed(Up to 300%),in order to aviod
bad situation,we set a limited speed here.
B）#113: In DDCS System,there is soft algorithm and hard algorithm,hard algorithm is processed by FPGA logic,the
movement is very smoothy,and high precise;Soft algorithm is to cut the arc line to a lot of little small pieces.But only when
the pulse equivalents of several axis which join into doing the circular interpolation are the same,the hard algorithm can
work well;and soft algorithm has no request for pulse equivalents.So when the controller work for helix interpolation,it is
better to use soft algorithm.
C) #124: When the rotating diameter is too small,better to limit the speed,by which to avoid the rotation speed is too
high because of too small diameter.
D) #125: When we process a G-code file,only F value to control the feeding speed.But for circular arc movement is very
different situation and need to set a more suitable speed for it.Then we can use this parameter: circular arc speed=F*#125
E) #435ƴ: In Auto Mode,the feed speed is set by F value.System will calculate out a projection speed on X and Y
seperately by F value.The control system will cite a slower speed between the protection speed and projection speed on X
or Y.
F) #2031:In Auto Mode,the acc speed only can be controlled by one parameter that is #99.But there are 4 axes each
one is in different mechanical situation.#2031 parameter brings the “start Acc in M_Ctrl mode”(#45,#46,#47,#48) to Auto
Mode.For example,if #2031=1,and “X axis start Acc in M_Ctrl” is lower than the projection Acc speed on X aixs from #99,sys-
tem will cite the “X axis start Acc in M_Ctrl mode” in Auto mode porocessing.
4) Automatic Control Parameters（Totally 16 Items）
0: G code; 1:default
When finish the job Z moves
to safety height
cannot be negative value
#15
#76
#77
#78
#79
#80
#82
#89
#99
#435
#436
Speed Selection
default operation speed
maximum speed
Z axis lifting protection speed
Z axis dropping protection speed
G0 Speed
Z axis safe height
Z axis back distance when pause
operation acceleration
X axis protection speed
Y axis protection speed
Uniaxial acc speed protection
Protection Speed at X axis,
protection by soft algorithmX
Protection Speed at Y axis,
protection by soft algorithmX
It is recombination Acc Speed
It is Recombination Acc Speed
1
3000
12000
3000
3000
3000
5
5
0
0
300
99999
99999
BOOL
BOOL
mm/min
mm/min
mm/min
mm/min
mm/min
mm
mm
mm/min2
mm/min
mm/min
1/0
10~99999
99~99999
99~99999
99~99999
99~99999
0~99
0~99
9~9999
#113
Arc interpolation algorithm
selection
0
#124 Circular centrifugal acceleration
0.000
mm/min2
0~9999
#125 Circular speed adjustment factor
Circular Speed=F*#125
0.100
mm/min2
0.1~2.0
99~99999
99~99999
#2031
#2037
Uniaxial acc is limited by
M_Ctrl start acc
Is FRO valid for G0?"
G0 Feeding Speed
Limited speed only for Z axis
The Max. feeding speed
1=yes, 0=no
1/0
1/0
0: Hard algorithm ；
1：Soft algorithm
1=yes, 0=no
1/0
Para.
Mark
Parameter definition
Default
value
Parameter
Unit
Parameter
Scope
Notes
