Mitsubishi Electric MELSEC-Q/L - Page 690

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7 APPLICATION INSTRUCTIONS
7.15 Clock Instructions
Operation error
• In any of the following cases, an operation error occurs, the error flag (SM0) turns ON, and an error code is stored into SD0.
Program example
• The following program adds 1 hour to the clock data read from the clock element, and stores the results into the area
starting from D100 when X20 is turned ON.
Error
code
Error details Q00J/
Q00/
Q01
QnH QnPH QnPRH QnU LCPU
4100 The value set for (S1) and (S2) is not within the setting range. 
4101 The range of the device specified by (S1), (S2) or (D) exceeds the range of
the corresponding device.

[Ladder Mode]
[List Mode]
[Operation]
• Time data read operation triggered by DATERDP instruction.
• Addition triggered by DATE+P instruction.
Reads data in the clock element to D0 or later
Sets the time to D0 or later
Step Instruction Device
Clock element
95
5
15
D1
D2
Year
Day
Month
10
23
41
2
D0
D3
D4
D5
D6
Hour
Minute
Second
Day of week
Time data
Hour: 1
Minute: 0
Second: 0
D11
D12
Hour: 11
Minute: 23
Second: 41
D101
D102
Hour: 10
Minute: 23
Second: 41
D4
D5
+
D100D10D3