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10
OTHER FUNCTIONS
(3) Precautions for time handled on the high speed data logger module
Deviation
10
- 3
10.1 Time Synchronization Function
(a) Before using the high speed data logger module, set the time data of CPU No. 1.
For the time data settings, refer to the user's manual of the CPU module used.
(b) There is a deviation in the time data of CPU No. 1 used by the high speed data
logger module.
For the time data accuracy, refer to the user's manual of the CPU module used.
(c) When the high speed data logger module obtains the time data of CPU No. 1, a
maximum of 1 second of delay occurs as the transfer time.
Therefore, there may be rare situations where a 1-second deviation occurs in
logging data time when setting the time.
(Example) Logging data time deviation
2009/02/01 15:48:32.8
2009/02/01 15:48:32.9
2009/02/01 15:48:32.0
2009/02/01 15:48:32.1
2009/02/01 15:48:32.2
(d) The time data of CPU No. 1 is obtained by the high speed data logger module at
the timings shown in (1).
When the time data of a running CPU No. 1 is updated, turn ON the
programmable controller CPU time synchronization request (YB).
1028
30.5
1029
31.5
1030
32.5
1031
33.5
1032
34.5
Data are normally sampled in 100ms intervals.
21.8
15.9
22.8
16.9
23.8
17.9
24.8
18.9
25.8
19.9
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Table of Contents
Troubleshooting
