Mitsubishi Electric melsec q00ujcpu User Manual page 165

Programmable controller

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(4) Changing and reading clock data

Changing clock data

Clock data can be changed either by GX Developer or a program.

1) Changing clock data by GX Developer

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2) Changing clock data by a program

Use the DATEWR instruction (instruction for writing clock data) to change the clock data.

For details of the DATEWR instruction, refer to the following.

QCPU Programming Manual (Common Instructions)

When clock data is changed by GX Developer or a program, the clock of 1/1000 second is reset to 0.

Year data settable by GX Developer is up to 2037.

[Set time] to open the Set time screen and change the clock data.

Figure 6.11 Set time screen

shows a program for writing the set clock data to D0 to D6.

Write request

Figure 6.12 Program example for writing clock data

Day of the week