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

The MQTT communication function of FX5-ENET does not allow multiple connections to be opened at the same time. The MQTT

Because the AWS IoT Core specification is the TLS protocol, you cannot connect using the TCP protocol.

The QoS, Retain, Will, and Clean Session functions of the MQTT communication function can not be configured in buffer me

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

No need. The MODBUS device allocation settings are used when the MODBUS slave function is used.

It is possible to set the basic/application settings in a program by selecting the parameter setting method to "Program.

Class1 communication of FX5-ENET/IP is instance communication. Tag communication is not supported. Tag communication is

"The number of characters specified in the input label: i_uBodyLength (number of characters in the body) is different fr

The MQTT communication function can be used for up to one connection.

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FAQ within [ Network/Communication ]

31-40 of Total 106

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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
Regarding multiple connections for the MQTT communication function

The MQTT communication function of FX5-ENET does not allow multiple connections to be opened at the same time. The MQTT communication function has a maximum ... More Details >>
- No：44358
- Release Date：2024/03/27 16:02
Regarding connecting to AWS IoT Core Using the TCP Protocol

Because the AWS IoT Core specification is the TLS protocol, you cannot connect using the TCP protocol. More Details >>
- No：44344
- Release Date：2024/03/20 13:37
Regarding QoS, Retain, Will, and Clean Session Functions for MQTT Communications

The QoS, Retain, Will, and Clean Session functions of the MQTT communication function can not be configured in buffer memory. Module FB: M+FX5ENET. QoS ca... More Details >>
- No：40053
- Release Date：2023/08/25 09:21
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
Regarding MODBUS Device Allocation Settings

No need. The MODBUS device allocation settings are used when the MODBUS slave function is used. More Details >>
- No：40026
- Release Date：2023/08/24 14:37
Regarding parameter setting for FX5-CCL-MS

It is possible to set the basic/application settings in a program by selecting the parameter setting method to "Program." Even if set by "program" is select... More Details >>
- No：39367
- Release Date：2023/01/12 17:12
Regarding Tag communication support of FX5-ENET/IP

Class1 communication of FX5-ENET/IP is instance communication. Tag communication is not supported. Tag communication is supported by FX5-EIP. More Details >>
- No：44624
- Release Date：2024/11/28 16:14
- Update：2025/11/11 14:32
Regarding Error code H1968 of FX5-ENET Mail send FB

"The number of characters specified in the input label: i_uBodyLength (number of characters in the body) is different from the number of characters in the bo... More Details >>
- No：44607
- Release Date：2024/11/28 16:12
Regarding maximum number of connections for MQTT communication function

The MQTT communication function can be used for up to one connection. More Details >>
- No：40055
- Release Date：2023/08/25 08:53

31-40 of Total 106

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