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FAQ within [ MELSEC-F Series ]
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Deleting all programs and data from the memory
Data can be cleared from GX Developer or GX Works2. [Online]→Select all [PLC memory], [Data device], and [Bit device.] on the Clear PLC memory window, and e... More Details >>
- No:22269
- Release Date:2018/08/30 13:48
- Category: MELSEC-F Series , Engineering Software , Main Unit
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The "S/S" terminal is used to switch the input type (sink input and source input). For the source input, connect the "S/S" terminal to the "0V" terminal, a... More Details >>
- No:22255
- Release Date:2018/08/30 13:48
- Category: MELSEC-F Series , Main Unit , I/O Extension
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Thecomment may not have been written tothe programmable controller. Or, the comment display setting may be required on the GX Works2 side. [Writing a com... More Details >>
- No:24681
- Release Date:2019/02/22 11:40
- Update:2019/02/22 14:15
- Category: MELSEC-F Series , Engineering Software , Main Unit
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M8029 (Instruction execution complete flag) is shared with multiple instructions. To obtain an execution completion result of a specific instruction, insert... More Details >>
- No:24775
- Release Date:2019/02/27 15:34
- Category: MELSEC-F Series , Network related products , Main Unit
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Using the FX3U-16CCL-M and FX2N-16CCL-M together
No, they cannot be added together. Only one FX3U-16CCL-M can be connected to one main unit. Multiple FX2N-16CCL-Ms can be connected to one main unit (dependi... More Details >>
- No:24954
- Release Date:2019/04/18 14:28
- Category: MELSEC-F Series , Network/Communication
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Latch (backup) areas in the data register (D) and extended register (R) of the FX3U/FX3UC series
D200 to D7999 and R0 to R32767 can be latched. D200 to D511 can be set as non-latch areas in parameters. For details on the parameter setting, refer to the... More Details >>
- No:24699
- Release Date:2019/02/27 08:58
- Category: MELSEC-F Series , Engineering Software , Main Unit
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Using a specified bit (on/off) of a word device (D) as a condition for a contact
In the FX3U/FX3UC series, a bit in a word device can be specified. It can be specified by "Word device (D only) + Decimal point + Bit position (0 to F)". A... More Details >>
- No:22261
- Release Date:2018/08/30 13:48
- Category: MELSEC-F Series , Engineering Software , Main Unit
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How to change the keeping (latched device data) range (FX3G/FX3GC)
The keeping (latched device data) range is fixed and cannot be changed in parameters. (Reference) [When an optional battery is not used] The keeping ran... More Details >>
- No:22260
- Release Date:2018/08/30 13:48
- Update:2019/02/19 11:52
- Category: MELSEC-F Series , Engineering Software , Main Unit , Accessories
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Meanings of the sink input/source input
The sink input connects to a negative common for 24 V DC. The source input connects to a positive common. The sink input is generally used in Japan and No... More Details >>
- No:22254
- Release Date:2018/08/30 13:48
- Category: MELSEC-F Series , Main Unit , I/O Extension
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Special auxiliary relay which is always on (MELSEC-F)
M8000 More Details >>
- No:22258
- Release Date:2018/08/30 13:48
- Category: MELSEC-F Series , Engineering Software , Main Unit
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