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AD Single measurement with averaging
The command AD single measurement with averaging performs 32 vol-
tage measurements at a rate of 100kS/s on a desired analog input chan-
nel, averages it and returns the value calibrated as an integer in µV to
the computer. The desired channel as well as the measuring range has
to be transmitted to the command.
Channel:
Channel
Single Ended
AIN00
AIN01
AIN02
AIN03
AIN04
AIN05
AIN06
AIN07
Differential measuring
AIN00+ / AIN01-
AIN00- / AIN01+
AIN02+ / AIN03-
AIN02- / AIN03+
AIN04+ / AIN05-
AIN04- / AIN05+
AIN06+ / AIN07-
AIN06- / AIN07+
Example of measuring the voltage on an input signal
Byte
Transmit
0
0A
1
00
2
01
01 (→ 4Byte)
3
4
cc
5
bb
6
00
7
00
Voltage = (integer) (Byte3 * 0x1000000 + Byte2 * 0x10000 + Byte1 * 0x100 + Byte0) [µV]
EXDUL-581E / EXDUL-581S © 2019 by Messcomp Datentechnik GmbH
Measuring range:
Channel byte
Range byte
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Representing
Command code 1st Byte
Command code 2nd Byte
Command code 3rd Byte
Length byte
Channel byte
Range byte
reserved
reserved
wasco
0
+/- 20.4V (Differential measuring only
max +/- 10.2V → GND)
1
2
3
4
5
Receive
Representing
0A
Command code 1st Byte
00
Command code 2nd Byte
01
Command code 3rd Byte
01 (→ 4Byte)
Length byte
ww
Measured value Byte0
ww
Measured value Byte1
ww
Measured value Byte2
ww
Measured value Byte3
®
Voltage
+/-10.2V
+/- 5.1V
+/-2,55V
+/-1.27V
+/- 0.63V
EV03
75
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