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- FAQ > Controllers > Programmable Controllers MELSEC > MELSEC-F Series > Changing the time of a programmable controller by using the clock data write instruction (TWR)
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Changing the time of a programmable controller by using the clock data write instruction (TWR)
To change the time in a programmable controller by using the clock data write instruction (TWR), is the control of M8015 (Clock stop/adjustment) required?
Answer
When changing the time by using the clock data write instruction (TWR), the control of M8015 (Clock stop/adjustment) is not required.
* When the clock data write instruction (TWR) is not used, use the special auxiliary relay M8015 (Clock stop/adjustment).
M8015 is used to change the data in the special register (D8013 to D8019) directly in a program or a peripheral such as an GOT.
(When M8015 turns on, the clock function stops and the built-in real-time clock in the programmable controller becomes writable. After changing the time, the clock function operates by turning off M8015.)
* When the clock data write instruction (TWR) is not used, use the special auxiliary relay M8015 (Clock stop/adjustment).
M8015 is used to change the data in the special register (D8013 to D8019) directly in a program or a peripheral such as an GOT.
(When M8015 turns on, the clock function stops and the built-in real-time clock in the programmable controller becomes writable. After changing the time, the clock function operates by turning off M8015.)
- Product Name
- FX1S, FX1N, FX1NC, FX2N, FX2NC, FX3S, FX3G, FX3GC, FX3U, FX3UC
- Product Category
- Main unit, Engineering Software, GX Developper, GX Works2
- Series
- MELSEC-F series
