The communication format can be set in the communication setting of a sequence program or "PLC Parameter setting" using

The station number setting is not required for non-protocol communication.

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

All input COM terminals send the same signal because all the terminals are internally connected. To turn on the input,

If the OUT instruction using the device number of the latch target device exists in a sequence program, the latched data

Check that the RST instruction of the high-speed counter is not executed while the program is running. For the high-spee

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

In the FX1S/FX1N/FX2N series, only the expansion board for special adapter connection can be used together with the spec

The main units with Ver.2.00 or later can read and write programs of the FX3 series connected to the intelligent device

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

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MELSEC-F Series

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FAQ within [ MELSEC-F Series ]

141-150 of Total 198

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Communication format setting

The communication format can be set in the communication setting of a sequence program or "PLC Parameter setting" using GX Developer. To avoid setting troub... More Details >>
- No：24929
- Release Date：2019/04/17 11:42
- Category： MELSEC-F Series , Engineering Software , Main Unit
Station number setting in the "PLC System(2)" tab of PLC Parameter setting on GX Developer when non-protocol communication is performed

The station number setting is not required for non-protocol communication. More Details >>
- No：24948
- Release Date：2019/04/18 14:27
- Category： MELSEC-F Series , Main Unit , Network/Communication
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
Multiple input COM terminals

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
Data backup failure

If the OUT instruction using the device number of the latch target device exists in a sequence program, the latched data may be overwritten by execution of t... More Details >>
- No：24783
- Release Date：2019/02/27 16:16
- Category： MELSEC-F Series , Engineering Software , Main Unit
Counting of a built-in high-speed counter

Check that the RST instruction ofthe high-speed counter is not executed whilethe program is running. Forthe high-speed counter which supports the external r... More Details >>
- No：24787
- Release Date：2019/02/28 09:06
- Category： MELSEC-F Series , Engineering Software , Main Unit
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
Using an expansion board and a special adapter together

In the FX1S/FX1N/FX2N series, only the expansion board for special adapter connection can be used together with the special adapter. In the FX3G series (onl... More Details >>
- No：24906
- Release Date：2019/04/15 11:32
- Category： MELSEC-F Series , Main Unit , I/O Extension
Supported versions of the FX3G/FX3GC series main units for accessing the other station from CC-Link using the FX3U-16CCL-M CC-Link master block

The main units with Ver.2.00 or later can read and write programs of the FX3 series connected to the intelligent device station and can monitor devices. (GX... More Details >>
- No：24950
- Release Date：2019/04/18 14:27
- Category： MELSEC-F Series , Main Unit , Network/Communication
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

141-150 of Total 198

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