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8 Analog I/O Slave Unit
GX-series EtherCAT Slave Unit User’s Manual
8
-5 F
unc
tion
of
th
e
Analo
g
Ou
tpu
t Slave U
n
it
8
8-5-
1 DA
Conversion
A
vailable Point
S
e
tting
8-5 Function of the Analog Output Slave
Unit
An Analog Output Slave Unit has the following convenient functions, in addition to the output signal
processing.
 Purpose
This function sets to skip processing unused points, and enhances the speed of refresh cycles of
analog output.
 Details of functions
Normally in this Unit, the values for two input points are converted in sequence. The setting can be
changed, so that unused points are not converted.
By reducing the number of conversion points, the conversion cycle speed is increased.
Whether DA conversion is enabled or disabled is settable for each point. (Default setting: Enable all
channels)
Notes Regardless of this setting, an Analog Output Slave Unit uses two points of data allocation area.
Set by SDO communications.
The target index is 3200 hex.
For the set values, refer to the information in the corresponding index of "Appendix A-1 Object
Dictionary"
in
Page A - 46
.
The table below shows the analog conversion time by the number of DA conversion available points.
Precautions for Correct Use
Do not disable all of the channels.
8-5-1 DA Conversion Available Point Setting
Overview of functions
Setting method
Enabled
channel
Conversion time [
μ
s]
1 point 500
2 points 1000