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Explanation on Special Registers D9900~D9999
When DVP-ES2 MPU is connected with modules, registers D9900~D9999 will be
reserved for storing values from modules. You can apply MOV instruction to operate
values in D9900~D9999.
When ES2 MPU is connected with DVP02DA-E2/DVP04DA-E2, the configuration of
special registers is as below:
Module
Module
Module
#0
#1
#2
D1320
D1321
D1322
D9900
D9910
D9920
D9901
D9911
D9921
D9902
D9912
D9922
D9903
D9913
D9923
Adjust D/A Conversion Curve
Users can adjust the conversion curves according to the actual needs by changing the
Offset value (CR#28 ~ CR#31) and Gain value (CR#34 ~ CR#37).
Gain: The corresponding voltage/current input value when the digital output value =
16,000.
Offset: The corresponding voltage/current input value when the digital output value = 0.
Equation for voltage output Mode0: 0.3125mV = 20V/64,000
X
Gain
Offset
Y
V
16000
Equation for current output Mode1: 0.625 A = 20mA/32,000
X
Gain
Offset
Y
mA
16000
Equation for current output Mode2: 0.5 A = 16mA/32,000
Adopt the equation of current output mode 1, substitute Gain for 19,200(12mA) and
Offset for 6,400(4mA)
19200
X
Y
mA
16000
Voltage output – mode 0:
-32768
Module
Module
Module
#3
#4
D1323
D1324
D1325
D9930
D9940
D9950
D9931
D9941
D9951
D9932
D9942
D9952
D9933
D9943
D9953
10
(
)
V
Offset
32000
20
(
)
mA
Offset
32000
6400
20
(
)
mA
6400
32000
10V
Voltage
output
5V
-32000
0
Offset
-5V
-10V
- 5 -
Module
Module
#5
#6
#7
D1326
D1327 Model Code
D9960
D9970 CH1 output value
D9961
D9971 CH2 output value
D9962
D9972 CH3 output value
D9963
D9973 CH4 output value
Y=Voltage output, X=Digital input
Y=Current output, X=Digital input
Y=Current output, X=Digital input
Gain
+32767
+16000
+32000
Digital input
Description
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