For your safety, programmable controllers must be grounded. Incomplete common grounding within the control panel or com

[F2-40BL] F1/F1J/F2 series, FX1/FX2/FX2C/FX2N series, and FX-20GM/E-20GM [FX1N-BAT] FX1N series* [FX3U-32BL] FX3G*/FX3G

For MX Component Ver.5, Ver. 5.000A or later supports the FX5U/FX5UC/FX5UJ CPU modules, and Ver. 5.003D or later support

Follow the procedure below.(1)Eliminate the error cause.(2) Store the error code to be cleared in SD50.(3)Turn OFF and O

If the L.ERR LED flashes at irregular intervals, it may indicate that no terminating resistor has been connected or the

The present scan time is stored in D8010. Monitor the value using a programming tool such as GX Works2 and GX Developer.

1. Data backup using an optional battery Built-in RAM data and clock data of a programmable controller are held by usi

The present value register of the high-speed counter is the 32-bit register. The applied instruction handling the 32-bit

File registers R can be used for data whose size is exceeding 32k points with RSET instruction, which is a block switc

This problem can be workarounded by upgrading software products made by other companies to the latest version or uninsta

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Programmable Controllers MELSEC

MELSEC iQ-R Series(45)
MELSEC iQ-F Series(578)

CPU Module(158)
I/O Module(5)
Analog(13)
High-Speed Counter(13)
Motion/Positioning(11)
Network/Communication(90)
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Engineering Software(55)
Safety Control(1)

Engineering Software(129)

FAQ within [ Programmable Controllers MELSEC ]

881-890 of Total 983

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How to ground programmable controllers

For your safety, programmable controllers must be grounded. Incomplete common grounding within the control panel or common grounding with heavy electrical s... More Details >>
- No：22276
- Release Date：2018/08/30 13:48
- Category： MELSEC-F Series , Main Unit , I/O Extension
Battery models(MELSEC-F)

[F2-40BL] F1/F1J/F2 series, FX1/FX2/FX2C/FX2N series, and FX-20GM/E-20GM [FX1N-BAT] FX1N series* [FX3U-32BL] FX3G*/FX3GC/FX3U/FX3UC series and FX-30P [FX2N... More Details >>
- No：22282
- Release Date：2018/08/30 13:48
- Category： MELSEC-F Series , Main Unit , Accessories
Regarding communication with MX Component

For MX Component Ver.5, Ver. 5.000A or later supports the FX5U/FX5UC/FX5UJ CPU modules, and Ver. 5.003D or later supports the FX5S CPU module. Also, both se... More Details >>
- No：22328
- Release Date：2018/08/30 13:55
- Update：2023/02/15 13:07
- Category： MELSEC iQ-F Series , CPU Module , Engineering Software , Network/Communication
How to clear errors

Follow the procedure below.(1)Eliminate the error cause.(2) Store the error code to be cleared in SD50.(3)Turn OFF and ON SM50.(4) The error is cleared. More Details >>
- No：22613
- Release Date：2018/09/03 17:29
- Category： MELSEC-Q Series
CC-Link slave station's flashing L.ERR LED

If the L.ERR LED flashes at irregular intervals, it may indicate that no terminating resistor has been connected or the communication is instable due to the ... More Details >>
- No：23001
- Release Date：2018/09/03 17:31
- Category： Network related products
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
Types of data backup methods (FX3G series)

1. Data backup using an optional battery 　Built-in RAM data and clock data of a programmable controller are held by using an optional battery. 　The life of... More Details >>
- No：24701
- Release Date：2019/02/27 08:59
- Category： MELSEC-F Series , Engineering Software , Main Unit , Accessories
Operation error of the instruction that handles the present value of a high-speed counter

The present value register of the high-speed counter is the 32-bit register. The applied instruction handling the 32-bit register must be the 32-bit instruct... More Details >>
- No：24907
- Release Date：2019/04/15 11:32
- Category： MELSEC-F Series , High-Speed Counting
How to use file registers R in the Q series

File registers R can be used for data whose size is exceeding 32k points with RSET instruction, which is a block switching instruction. Use file registers... More Details >>
- No：22525
- Release Date：2018/09/03 17:28
- Update：2018/09/20 14:29
- Category： MELSEC-Q Series
Error in simulation in GX Works2

This problem can be workarounded by upgrading software products made by other companies to the latest version or uninstalling them.For more details, refer to... More Details >>
- No：22570
- Release Date：2018/09/03 17:29
- Category： MELSEC-Q Series

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