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13 COMMON FUNCTIONS
13.5 Clock data function
"The clock data function" utilizes the PLC CPU clock data in the D75P2.
This clock data is used to monitor
Md.7 to Md.12 , Md.13 to
Md.18
,
Md.19
to
Md.23
, Md.24 to Md.28 history data. The clock data is controlled in 0.1 second
units in the D75P2 to simplify the measurement of cycle time, etc.
The details shown below explain about the "clock data setting function".
(1) Precautions during control
(2) Setting the clock data
(1) Precautions during control
(a) Set the clock data every time the D75P2 is started. If the clock data is not
set, counting will begin as "00 hours 00 minute 00 seconds" when the
D75P2 starts.
(b) The D75P2 clock data count value is less accurate that the PLC CPU clock
data. Therefore, synchronize it with the PLC CPU clock data about once a
day.
(c) Data indicating the "date" in the PLC CPU clock data will be ignored.
(2) Setting the clock data
The following shows the example setting data for reading the PLC CPU clock
data and setting it in the D75P2.
(a) Set the following data.
Setting item
Setting
value
Setting details
Buffer memory address
Axis 1 Axis 2
Cd.1
Clock data setting
(hour)
Set the PLC CPU clock data (hours). 1100
Cd.2
Clock data setting
(minute, second)
Set the PLC CPU clock data (minutes,
seconds).
1101
Cd.3
Clock data writing 1 Set "1" (clock data write request). 1102
* Refer to section "5.7 List of control data" for details on the setting details.