Chapter 9 Expansion Module 225
Analog Output Module 2AO
SG2 main unit can connect with two 2-channel, 12bits analog output module, 2AO, at the same time. The close
one will be auto-assign to AQ01~AQ02, and the other is distributed to AQ03~AQ04. It can out 0~10V voltage signal
or 0~20mA current signal, and the data in the 12bits data register, DRD4~DRD7, will determined the output of AO
channel. See the below table for more information.
content standard
Mode voltage current
Analog output range
0V~10V
Load impedance should be
bigger than 500Ω
0mA~20mA
Load impedance should be
smaller than 500Ω
Differentiation 10mV 40μA
Digital output 0.00V~10.00V 0.00mA~20.00mA
AQ01~AQ04
0~1000 0~500 Register
value
DRD4~DRD7 0~4095 0~2047
Definition ±2.5% ±2.5%
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;
※ Analog output works in mode 1 if the value of the mode register, DRD0~DRD3, is larger than 3.
The appearance of AQ value on the HMI screen
The HMI on SG2 displays the code of selected coil when SG2 at STOP mode, and showing the current
value at RUN mode, see the below figure to get more information.
STOP display RUN display
When AQ mode is in current mode, the relationship among
the DR, AQ output and display value is shown as below:
DRD5=2047, AQ02=500, display: 20.00mA
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