Vector VEC-VA Series

VA Motion Controller Programming Manual
543
setting axis)
coincides
Sample_Time.
Description:
(1) when the instruction starts execution Enable changes from FALSE to TRUE.
Unit reading speed is controlled axis Pulse / s, the sampling period is Sample_Time
parameter, calculated from the current shaft speed:
Assumptions: display means of the terminal speed n units / s, the read pulses per second
Velocity = 10000 Pulse / s, the number of pulses per motor revolution (moter_PPC) = 10000 Pulse
/ rad, the terminal mechanism Screw_Lead lead of 1000units the reduction gear ratio of 1: 2
then:
n = unit / s
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= 500 units / s

Output parameters
name
Features
type of data
Output range
Status (state)
Retention
BOOL
TRUE or FALSE
Valid (effective)
Retention
BOOL
TRUE or FALSE
Sample_Time_Test
Retention
REAL
Velocity
(current rate)
Display speed of
the current sample
(unit: Pulse / s)
REAL
Real
Error (reserved)
Retention
BOOL
Retention
ErrorID (reserved)
Retention
WORD
Retention
Program Example
Example: Read the current speed shaft AXIS0;
1. variables, and procedures
variable name
type of data
The initial value
NS_CC_ReadPulseVelocity_1
NS_CC_ReadPulseVelocity
CNT_ID
WORD
0
Enable
BOOL
1
Sample_Time
REAL
10
Velocity
REAL
Step 1: Following programming instructions call NS_CC_ReadPulseVelocity_1 module