ASDA-A2  Chapter 7 Motion Control 
7-8     Revision February, 2017 
7.2.2  Description of Data Array 
Many functions of motion control, such as CAPTURE, COMPARE and E-Cam (A2L does not 
support E-Cam function) are the data that needs to be saved in large amount of memory space, 
therefore, the servo drive reserves a continuous internal space to satisfy the need. The main 
feature of the data array is as the followings: 
Feature Introduction of Data Array 
Usage 
  Save the captured data of CAPTURE 
  Save the compared value of COMPARE 
  Save the contour table of E-Cam 
Note:  
1. The system does not partition off the data array into the individual 
space of CAP, CMP and E-Cam. The user could program it 
according to the demand. Therefore, the space might be 
overlapped. Please pay close attention to it when using. 
2. A2L does not support E-Cam function. 
Size of Data Array 
  32-bit integer x 800 (refer to P5-10) 
  Each data has its corresponding address. Specify the address is 
a must when reading or writing the data. 
  The 800 data is from 0 to 799. 
Data Retained 
  Manually set up the saving (P2-08 = 30, 35) is a must and the 
data should be saved in EEPROM of the servo drive. 
  Save the data when it is Servo Off. 
  The data will be loaded into data array automatically when it is 
Servo On. 
Accessing Window 
  Should be access via parameter P5-10 ~ P5-13. 
 
The content of the data array cannot be read or wrote directly, reading or writing the data must 
via parameter P5-10 ~ P5-13. The description of the parameters is as the followings: 
Description of Related Parameter about Data Array 
Parameter  Name  Description 
P5-10 
Size of data 
array 
Return the size of data array (read-only) 
P5-11 
Reading / 
writing 
address 
Set the desired address of reading and writing 
P5-12 
Reading / 
writing 
window #1 
Read via panel: After reading the content of P5-11, the value of 
P5-11 will not change. 
Write via panel: After writing the content of P5-11, the value of 
P5-11 will increase 1 automatically. 
------------------------------------------------------------------------------ 
Read via communication: After reading the content of P5-11, 
the value of P5-11 will increase 1 
automatically. 
Write via communication: After writing the content of P5-11, the 
value of P5-11 will increase 1 
automatically.