Mitsubishi Electric Melsec QJ71LP21 Reference Manual page 239

7 APPLICATION FUNCTIONS
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(3) System timer interval
The low-speed cyclic data is sent in the link cycle at the specified time.
By omitting year, month, and date, the low-speed cycle transmission can be
activated yearly (or monthly, or daily). Hour, minute and second cannot be
omitted.
Setting points: 1 to 8 points
[Setting method]
1) Click ( ) [System times] to select.
2) Set year, month, date, hour, minute and second to the specified time.
In the following screen example:
Points 1 to 3
Points 4 and 5 : By omitting year and month, data is sent at the
Point 6
Points 7 to 8
POINT
(1) The system timer operates based on the host's clock. If used without
matching the clocks on the sending station and receiving station, there may
be a time gap between the stations.
(2) When handling multiple data without the station-based block data assurance
function, new and old data may coexist. Apply interlocks in the programs
(refer to Section 6.2.3).
: By omitting year, month and date, data is sent every
day at the specified time.
specified time monthly.
: By omitting the year, data is sent at the specified time
every year.
: Data is sent only once at the specified time.
MELSEC-Q
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