Omron CRT1 - 10-2008, Operation Manual

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Analog I/O Slave Unit Functions Section 11-4
11-4 Analog I/O Slave Unit Functions
11-4-1 Analog Input Unit Functions
Setting the Number of
AD Conversion Points
Normally, when using a four-point Input Unit, the values for the four inputs are
converted in sequence. The setting can be changed, however, so that unused
inputs are not converted. By reducing the number of conversion points, the
conversion cycle speed is increased. For details on conversion cycle time,
refer to
6-4-3 Calculating the Conversion Cycle.
Note Four points of input analog data are used regardless of the setting of the num-
ber of AD conversion points.
Conversion points Details
4 points (default) Converting Inputs 0 to 3.
3 points Converting Inputs 0 to 2.
2 points Converting Inputs 0 and 1.
1 point Converting Input 0 only.
CRT1-AD
0 1 2 3
All points used.
CRT1-AD
0 1 2 3
Used points
CRT1-AD
0 1 2 3
Used points
CRT1-AD
0 1 2 3
Used points