Chapter 6 FBD Block Diagram Programming
137
Analog Output
AQ instructions need to use with extension analog out module 2AO.
The default output of AQ is 0~10V voltage, the 12bits data is 0~4095 and the corresponding value of AQ is
0~1000. It also can be set as 0~20mA current output, the 12bits data is 0~2047 and the corresponding value of
AQ is 0~500. The 12bits data saved in DRD4~DRD4. The output mode of AQ is set by the current value of
DRD0~DRD3.
Output
register
Mode
register
Mode
DRD0~DRD3 data definition
Channel 1: AQ01
DRD4
DRD0
1
0: voltage mode and reset value when stop;
Channel 2: AQ02
DRD5
DRD1
2
1: Current mode and reset value when stop;
Channel 3: AQ03
DRD6
DRD2
3
2: voltage mode and keep value when stop;
Channel 4: AQ04
DRD7
DRD3
4
3: Current mode and keep value when stop;
※
It will be thought as 0 if the value of DR isn’t in the range of 0~3. That means the output mode of AQ is
mode 1.
※
When output value type of AQ is set to constant, AQ output value changed by DR value (AQx=DRx/4.095);
※
When output value type of AQ is set to other parameters variables, DR value changed by AQ output value
(DRx=AQx*4.095).
※
More information about expansion analog input to see:
Chapter 8 Expansion Module-Analog Module
.
Example 1: AQ01 preset value is constant;
When running and disable M01, DRD4 output value is AQ01 setting value 4000, and AQ01 output 9.77V;
When running and enable M01, adjust the value of DRD4, AQ01 output value changed with DRD4;
Example 2: AQ01 preset value is other parameters;
When running, DRD4 output value is out control of I01. AQ01 output value is A01, adjust the value of A01,
DRD4 output value changed with A01;
PDF compression, OCR, web optimization using a watermarked evaluation copy of CVISION PDFCompressor