Festo EasyPort USB Manual De Instrucciones página 147

9. EasyPort USB command interpreter
Command Description
MRA<n>=0
Set measuring range for analogue outputs to 0...10 V
The measuring range for the analogue outputs is set to 0 to 10 V at the EasyPort USB
module with address <n> (<n> = 1...4).
This measuring range is automatically preset after initialising an EasyPort USB module.
MRA<n>=1
Set measuring range for analogue outputs to –10...+10 V
The measuring range for the analogue outputs is set to -10 to +10 V at the EasyPort
USB module with address <n> (<n> = 1...4).
Switching the measuring range for the analogue outputs
15 14 13
2 2 2 2
0 X X X
12 bit analogue input
Data format of the analogue inputs
© Festo Didactic GmbH & Co. KG „ 721876
Reading in analogue signals
The EasyPort USB is equipped with analogue input channels 0...3. The
DEW command, along with indication of the address of the EasyPort USB
module and the channel number, is used to read in an analogue signal.
Due to the data format used by the analogue inputs, a value range of
0x0000 to 0x7FF8 (32760 decimal) is possible.
12 11 10 9
2 2 2
X X X
8 7 6 5
2 2 2 2
X X X X
4 3 2 1
2 2 2 2
X X 0 0
0
2
0
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