Compare Function - Delta ASDA-A2 Series User Manual

Chapter 7 Motion Control Functions
Capture Operation:
First point captured
P5-76
Capture axis
(P5-37)
Capture signal
(DI7)
DO signal:
CAP_OK
P5-39 X0=0 after Capture operation is

completed.
Call PR#50 when all in P5-38 captured completed.

P5-39 X0=1DO signal is reset when Capture

function is enabled next time.

7.11.2 Compare Function

The Compare function is a reverse process of the Capture function. The items stored in
data array will be compared to the signal of a physical axis (main encoder, linear
encoder, or pulse train).
The Compare function uses the instant position of motion axis to compare with the
value which store in data array. When the compare conditions are satisfied, DO4 signal
will output immediately for motion control.
The signal to DO4 for Compare function is a physical signal and cannot be simulated
from software. It can complete precise Compare function for high-speed motion axis.
The characteristics of Compare function is described as follows:
Sources
Revision September 2012
Enable Compare function
The first point is saved in P5-36
The second point is saved in P5-36+1
The third point is saved in P5-36+2
1 2 3
Characteristics of Compare function
Three sources of Compare function:

Main encoder: Motor encoder

Auxiliary encoder: Linear scale

Pulse command: Pulse train

Capture axis (When the source is the capture axis, the capture
source setting can not be changed.)
The selected source axis will be displayed by P5-57. Before
executing Capture function, please set P5-57 first.
N P5-38 Amount (Data Length)
A2
ASDA-
Data Array
.....
POS 1
POS 2
POS 3
~
POS N
7-43