Octal numbers are assigned as input/output numbers for the MELSEC-F series. The octal number system uses the digits from

Power off and on the programmable controller again after the communication setting is changed.

The built-in Ethernet port on the FX5 CPU module does not support EtherNet/IP communication. Use FX5-ENET/IP.

The file register is used for storing predetermined values (such as specification values for product inspection). Other

This occurs when the specified memory does not have consecutive free space in it. In this case, delete unnecessary files

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

You cannot select the item while the programmable controller is being monitored. Execute [Close all windows] of [Window]

The device memory data cannot be stored in a memory cassette. In the FX3U/FX3UC series, a part of device memory data can

The FX3G series does not support the index modifier for the bit devices. The FX3U/FX3UC series supports this function.

For FX5U/FX5UC CPU module, firmware version 1.110 or later is supported. For the FX5UJ/FX5S CPU module, it is compatible

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Programmable Controllers MELSEC

MELSEC iQ-R Series(45)
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FAQ within [ Programmable Controllers MELSEC ]

881-890 of Total 1023

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Assignment of input/output numbers (MELSEC-F series)

Octal numbers are assigned as input/output numbers for the MELSEC-F series. The octal number system uses the digits from 0 to 7 → from 10 to 17 → from 20 to... More Details >>
- No：24868
- Release Date：2019/04/15 08:06
- Category： MELSEC-F Series , Engineering Software , Main Unit
Reflecting the changes in the communication setting

Power off and on the programmable controller again after the communication setting is changed. More Details >>
- No：25006
- Release Date：2019/04/23 11:11
- Category： MELSEC-F Series , Engineering Software , Main Unit
Regarding EtherNet/IP Communications

The built-in Ethernet port on the FX5 CPU module does not support EtherNet/IP communication. Use FX5-ENET/IP. More Details >>
- No：39319
- Release Date：2023/02/14 08:57
- Category： MELSEC iQ-F Series , CPU Module , Network/Communication
Differences between the file register and other registers

The file register is used for storing predetermined values (such as specification values for product inspection). Other registers are used as a temporary st... More Details >>
- No：22256
- Release Date：2018/08/30 13:48
- Category： MELSEC-F Series , Engineering Software , Main Unit
Arranging the PLC memory

This occurs when the specified memory does not have consecutive free space in it. In this case, delete unnecessary files or arrange the PLC memory. Select ... More Details >>
- No：22604
- Release Date：2018/09/03 17:29
- Update：2018/09/20 18:03
- Category： MELSEC-Q Series
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
I cannot select [Transfer Setup] in GX Developer because it is displayed in gray.

You cannot select the item while the programmable controller is being monitored. Execute [Close all windows] of [Window] from the tool bar, and check if Tra... More Details >>
- No：22955
- Release Date：2018/09/03 17:31
- Update：2018/09/25 12:11
- Category： Engineering Software
Data that can be stored in a memory cassette (FX3U/FX3UC)

The device memory data cannot be stored in a memory cassette. In the FX3U/FX3UC series, a part of device memory data can be latched using a battery. The de... More Details >>
- No：24789
- Release Date：2019/02/28 09:07
- Category： MELSEC-F Series , Accessories
Index modifier of bit devices in the FX3G series

The FX3G series does not support the index modifier for the bit devices. The FX3U/FX3UC series supports this function. More Details >>
- No：24959
- Release Date：2019/04/18 14:35
- Category： MELSEC-F Series , Engineering Software , Main Unit
Regarding the supported version of the simple CPU communication function

For FX5U/FX5UC CPU module, firmware version 1.110 or later is supported. For the FX5UJ/FX5S CPU module, it is compatible from the first one. More Details >>
- No：39316
- Release Date：2023/02/14 08:56
- Category： MELSEC iQ-F Series , CPU Module , Network/Communication

881-890 of Total 1023

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