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8 Analog I/O Slave Unit
8 - 12 GX-series EtherCAT Slave Unit User’s Manual
8-4 Overview of the Analog Output Slave
Unit
An Analog Output Slave Unit converts (DA conversion) digital data (binary value) stored in the
EtherCAT Master Unit to analog signals such as 1 to 5 V and 4 to 20 mA and output them.
Digital data that is output is converted to analog data using a set output range as shown below.
If the output data exceeds the data range for which conversion is possible, the converted data is fixed at
the maximum or minimum value of the range.
 Output range 0 to 5 V
Data from 0000 to 1F40 hex (0 to 8000) is converted to voltage from 0 to 5 V and output.
The output data range for which conversion is possible is FE70 to 20D0 hex (
−
400 to +8400) and
here the output data is
−
0.25 to +5.25 V.
 Output range 1 to 5 V
Data from 0000 to 1F40 hex (0 to 8000) is converted to voltage from 1 to 5 V and output.
The output data range for which conversion is possible is FE70 to 20D0 hex (
−
400 to +8400) and
here the output data is 0.8 to 5.2 V.
8-4-1 Output Range and Converted Data
Output Range and Converted Data
FE70 (
−
400)
0 V
−
0.25 V
5.25 V
5 V
8000
7FFF
0000 (0)
20D0 1F40
(8000) (8400)
Converted data
Hexadecimal (decimal)
Voltage
FE70
1 V
0V
0.8 V
5.2 V
5 V
8000
7FFF
(
−
400)
Converted data
Hexadecimal (decimal)
Voltage
0000 (0)
20D0 1F40
(8000) (8400)