Table of Contents
4
FUNCTION
4.2.7
(1) Logging function
(2) Logging operation
4
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4.2 Function Details of A/D Conversion
4.2.7 Logging function
Logging function
This function collects the data of the digital output value or scaling value performed
A/D conversion at a preset timing in series.
This function is useful to check the data change of the digital output value or scaling
value performed A/D conversion periodically because the function sets an interval
(logging period), performs logging, and stores the logs into the buffer memory.
In addition, this function is useful to check the data change of the analog input value
during the stopped logging, if a trigger condition is set by using a hold trigger.
When logging starts in sequence programs, logging data are stored into the logging
data storage areas in order from the initial area.
Logging data can be stored up to 10000th data point area for a channel.
The stored data are retained until when the CPU module is powered off or Operating
condition setting request (Y9) is set to on.
Q64AD2DA
Specified device data
Digital output value
(Un\G100)
Scaling value
(Un\G102)
Figure 4.8 Logging operation
Logging data storage area
Un\G5000
Un\G5001
Un\G5002
Un\G5003
Un\G5004
Un\G5005
Un\G14998
Un\G14999
If data are stored up to 10000th data point area,
data will be overwritten from the 1st data area.
1st data
2nd data
3rd data
4th data
5th data
6th data
9999th data
10000th data
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