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FAQ within [ MELSEC-F Series ]
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Assignment of remote input device and remote output device of FX3U-16CCL-M
The remote input device and the remote output device cannot be assigned in network parameters. To assign them, create a program for updating data. For de... More Details >>
- No:24792
- Release Date:2019/02/28 09:08
- Category: MELSEC-F Series , Engineering Software , Network/Communication
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FX3U-ENET-ADP connectable programmable controllers in the MELSEC-F series
The FX3U-ENET-ADP can be connected to the FX3G/FX3GC series (both Ver. 2.00 or later) and the FX3U/3UC series (both Ver. 3.10 or later). Products which are ... More Details >>
- No:24706
- Release Date:2019/02/27 09:00
- Category: MELSEC-F Series , Engineering Software , Main Unit , Network/Communication
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All input COM terminals send the same signal because all the terminals are internally connected. To turn on the input, the extension unit must be connected ... More Details >>
- No:22274
- Release Date:2018/08/30 13:48
- Category: MELSEC-F Series , Main Unit , I/O Extension
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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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The power supply lamp of a running programmable controller suddenly turned off or flashes
Check whether the lamp is back to normalafter disconnecting the wiring of the "24V" (service power supply) terminal. Ifthe lamp is back to normal,the servic... More Details >>
- No:22267
- Release Date:2018/08/30 13:48
- Update:2019/02/19 11:53
- Category: MELSEC-F Series , Main Unit
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Types of Batteries used in MELSEC-F
F2-40BL: Lithium thionyl chloride primary battery FX2NC-32BL: Lithium thionyl chloride primary battery FX3U-32BL: Manganese dioxide lithium primary battery F... More Details >>
- No:22265
- Release Date:2018/08/30 13:48
- Category: MELSEC-F Series , 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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Connection of a totem pole output encoder
The totem pole output encoder cannot be connected to the FX2NC-1HC/FX2N-1HC/ FX3U-2HC. The connectable encoders are as follows. ・ Open collector output typ... More Details >>
- No:25010
- Release Date:2019/04/23 11:12
- Category: MELSEC-F Series , High-Speed Counting
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Protection components of relay contacts
We recommend you to connecta diode for commutation to the DC load, and surge absorber (C-R) to the AC load for the protection of the relay contacts. More Details >>
- No:24999
- Release Date:2019/04/23 10:39
- Category: MELSEC-F Series , Main Unit
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Input of the R device of the FX3U series in the FX-20P
Since the FX3U series does not support the FX-20P, available device ranges are within the range of the FX2N. ("R" devices do not exist in the FX2N.) The ha... More Details >>
- No:24989
- Release Date:2019/04/23 10:37
- Category: MELSEC-F Series , Accessories
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