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

The error code "2200" is "MISSING PARA.". The causes of the error are described below. (1) The necessary parameter file

The setting in Latch (1) can be cleared by latch clear operation. The setting in Latch (2) cannot be cleared by latch cl

If a circuit is being monitored or a monitor window such as the device batch monitor window is open, [Transfer Setup] on

The FX5 CPU module's built-in high-speed counter can control up to 8CH. Up to 16CH can be controlled by adding 4 modules

From the following menu of GX Works3: [Diagnostics]→[Module Diagnostics(CPU Diagnostics)] the event history function can

F2-40BL: Lithium thionyl chloride primary battery FX2NC-32BL: Lithium thionyl chloride primary battery FX3U-32BL: Mangan

Periodic replacement is recommended. For example, standard life of FX3U-32BL is 5 years (at ambient temperature of 25)

For TCP protocol of SLMP communication, KeepAlive is fixed and cannot be changed. In the case of UDP protocol, it is fix

In 8-bit mode, the upper 8 bits of transmitted and received data are ignored and only the lower 8 bits are valid data.

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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)
High-Speed Counter(14)
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Network/Communication(106)
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Engineering Software(129)

FAQ within [ Programmable Controllers MELSEC ]

221-230 of Total 1023

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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
Error code "2200" in LCPU

The error code "2200" is "MISSING PARA.". The causes of the error are described below. (1) The necessary parameter file does not exist in all drives. (2) ... More Details >>
- No：22749
- Release Date：2018/09/03 17:29
- Update：2018/09/22 09:12
- Category： MELSEC-L Series
Latch settings

The setting in Latch (1) can be cleared by latch clear operation. The setting in Latch (2) cannot be cleared by latch clear operation. More Details >>
- No：22567
- Release Date：2018/09/03 17:29
- Update：2018/09/20 16:48
- Category： MELSEC-Q Series
Unable to select [Transfer Setup]

If a circuit is being monitored or a monitor window such as the device batch monitor window is open, [Transfer Setup] on the menu is grayed out. Select [Wi... More Details >>
- No：22548
- Release Date：2018/09/03 17:28
- Update：2018/09/20 15:40
- Category： MELSEC-Q Series
Regarding the maximum number of channels of high-speed counters

The FX5 CPU module's built-in high-speed counter can control up to 8CH. Up to 16CH can be controlled by adding 4 modules of FX5-16ET/E□-H (high-speed pulse ... More Details >>
- No：22311
- Release Date：2018/08/30 13:55
- Update：2023/02/13 15:34
- Category： MELSEC iQ-F Series , CPU Module , High-Speed Counter
Regarding the error history

From the following menu of GX Works3: [Diagnostics]→[Module Diagnostics(CPU Diagnostics)] the event history function can be found. The event history can dis... More Details >>
- No：22305
- Release Date：2018/08/30 13:55
- Update：2023/02/13 11:37
- Category： MELSEC iQ-F Series , CPU Module , Engineering Software
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
Battery replacement timing

Periodic replacement is recommended. For example, standard life of FX3U-32BL is 5 years (at ambient temperature of 25). The life of the battery changes wit... More Details >>
- No：22262
- Release Date：2018/08/30 13:48
- Category： MELSEC-F Series , Main Unit , Accessories
Regarding KeepAlive for SLMP Communication

For TCP protocol of SLMP communication, KeepAlive is fixed and cannot be changed. In the case of UDP protocol, it is fixed to not perform a keep-alive check. More Details >>
- No：45477
- Release Date：2025/11/12 13:37
- Category： MELSEC iQ-F Series , CPU Module , Network/Communication
Regarding differences between 8 bit and 16 bit modes for non-protocol communication

In 8-bit mode, the upper 8 bits of transmitted and received data are ignored and only the lower 8 bits are valid data. In 16 bit mode, send/receive data i... More Details >>
- No：39363
- Release Date：2023/02/15 13:04
- Category： MELSEC iQ-F Series , CPU Module , Network/Communication

221-230 of Total 1023

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