The sink input connects to a negative common for 24 V DC. The source input connects to a positive common. The sink in

FX5U/FX5UC/FX5UJ CPU modules cannot perform firmware update using GX Works3. Use the SD memory card to update the firmwa

The error code "2100" is "SP.UNIT LAY ERR.". This error may be caused by one of the following factors. (1) An intellige

When changing the time by using the clock data write instruction (TWR), the control of M8015 (Clock stop/adjustment) is

A battery is used for backing up program memory and latched device data and maintaining clock operation in the event of

File registers "R" use the block switching method. The number of file register points used are divided and specified in

The USB driver is not installed.The driver needs to be separately installed before the first connection to a CPU module.

Yes, it is. However, if the error cause is not eliminated, M8004 will turn on again after powering on. * How to chec

In GX Works3, [Tools] - [Options] - [Conversion] - [Online Program Change], set "Execute Online Program Change in Conver

Free mail services that have been verified to work with the email function are Gmail, Yahoo! mail, and iCloud email.(As

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Programmable Controllers MELSEC

MELSEC iQ-R Series(45)
MELSEC iQ-F Series(672)

CPU Module(185)
I/O Module(5)
Analog(16)
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Engineering Software(129)

FAQ within [ Programmable Controllers MELSEC ]

51-60 of Total 1023

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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
Regarding how to update the firmware of the FX5 CPU module

FX5U/FX5UC/FX5UJ CPU modules cannot perform firmware update using GX Works3. Use the SD memory card to update the firmware. However, the FX5S CPU module sup... More Details >>
- No：39325
- Release Date：2023/02/14 09:03
- Category： MELSEC iQ-F Series , CPU Module , Engineering Software
Error code "2100" in LCPU

The error code "2100" is "SP.UNIT LAY ERR.". This error may be caused by one of the following factors. (1) An intelligent function module is assigned as a... More Details >>
- No：22725
- Release Date：2018/09/03 17:29
- Update：2018/09/21 17:02
- Category： MELSEC-L Series
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
Programmable controllers with no battery (MELSEC-F)

A battery is used for backing up program memory and latched device data and maintaining clock operation in the event of a power failure. The FX3S/FX3G/FX3G... More Details >>
- No：22259
- Release Date：2018/08/30 13:48
- Category： MELSEC-F Series , Main Unit , Accessories
Difference between R and ZR

File registers "R" use the block switching method. The number of file register points used are divided and specified in units of 32k points. When multiple ... More Details >>
- No：22512
- Release Date：2018/09/03 17:28
- Update：2018/09/20 13:29
- Category： MELSEC-Q Series
GX Works2's USB driver installation procedure

The USB driver is not installed.The driver needs to be separately installed before the first connection to a CPU module. More Details >>
- No：22507
- Release Date：2018/09/03 17:28
- Category： MELSEC-Q Series
How to reset M8004 (Error occurrence)

Yes, it is. However, if the error cause is not eliminated, M8004 will turn on again after powering on. * How to check the error In the FX3S/FX3G/FX3GC/FX... More Details >>
- No：22280
- Release Date：2018/08/30 13:48
- Category： MELSEC-F Series , Engineering Software , Main Unit
Regarding How to release Online Program Change

In GX Works3, [Tools] - [Options] - [Conversion] - [Online Program Change], set "Execute Online Program Change in Converting" to "No." More Details >>
- No：44876
- Release Date：2025/03/18 10:26
- Category： MELSEC iQ-F Series , CPU Module , Engineering Software
Regarding Free Mail Service with Email Function

Free mail services that have been verified to work with the email function are Gmail, Yahoo! mail, and iCloud email.(As of July 2025) Use the encryption fun... More Details >>
- No：40058
- Release Date：2023/08/25 10:22
- Update：2025/11/11 14:31
- Category： MELSEC iQ-F Series , Network/Communication

51-60 of Total 1023

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