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Programmable Controllers MELSEC
FAQ within [ Programmable Controllers MELSEC ]
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Remedies for WDT errors on a MELSECNET/H board
The error code indicates a WDT (watchdog timer) error. It is determined as the cause that the MELSECNET/H driver cannot work due to a computer or OS hang, or... More Details >>
- No:22969
- Release Date:2018/09/03 17:31
- Category: Network related products
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It is used for switching between Sink/Source input. For sink input wiring, connect with "24V" terminal and short-circuit the "0V" and "input X***". For sou... More Details >>
- No:22286
- Release Date:2018/08/30 13:55
- Update:2022/12/22 09:39
- Category: MELSEC iQ-F Series , CPU Module , I/O Module
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I/O structure error in the MELSEC-F
When an unimplemented input (X) or output (Y) number is used in a program, M8060 turns on. The first to third digits of the numericalvalue stored in D8060 i... More Details >>
- No:22284
- Release Date:2018/08/30 13:48
- Update:2019/02/18 15:17
- Category: MELSEC-F Series , Engineering Software , Main Unit
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For the sink input, the "S/S" terminal and the "24V" terminal are needed to be short-circuited. More Details >>
- No:22272
- Release Date:2018/08/30 13:48
- Category: MELSEC-F Series , Main Unit , I/O Extension
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Changing the time of a programmable controller by using the clock data write instruction (TWR)
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... More Details >>
- No:22266
- Release Date:2018/08/30 13:48
- Category: MELSEC-F Series , Engineering Software , Main Unit
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Connecting special adapters to FX3U series
Anexpansion board is required. (However, it is not required when connecting only the special high-speed I/O adapter.) More Details >>
- No:24934
- Release Date:2019/04/18 14:23
- Category: MELSEC-F Series , Main Unit , I/O Extension
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How to check the scan time (MELSEC-F series)
The present scan time is stored in D8010. Monitor the valueusing a programming tool such as GX Works2 and GX Developer. More Details >>
- No:24685
- Release Date:2019/02/22 11:40
- Update:2019/02/22 15:07
- Category: MELSEC-F Series , Engineering Software , Main Unit
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"Rebuild All" converts the entire project and "Convet" only coverts the modified part of the program. More Details >>
- No:22326
- Release Date:2018/08/30 13:55
- Update:2023/06/23 10:40
- Category: MELSEC iQ-F Series , CPU Module , Engineering Software
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Regarding the method to check the scan time
The current value of the scan time is stored in the following special devices. Please monitor using GX Works3. ◇Scan information SD520 Current scan time (... More Details >>
- No:22289
- Release Date:2018/08/30 13:55
- Update:2023/06/23 10:20
- Category: MELSEC iQ-F Series , CPU Module , Engineering Software
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Using an expansion board and a special adapter together
In the FX1S/FX1N/FX2N series, only the expansion board for special adapter connection can be used together with the special adapter. In the FX3G series (onl... More Details >>
- No:24906
- Release Date:2019/04/15 11:32
- Category: MELSEC-F Series , Main Unit , I/O Extension
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