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FAQ within [ MELSEC iQ-F Series ]
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Regarding bit specification index modification for word devices
Index modification cannot be done for bit specifications for Word device. More Details >>
- No:39299
- Release Date:2023/02/13 16:39
- Category: MELSEC iQ-F Series , CPU Module , Engineering Software
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Regarding the connection between FX5-CCLGN-MS and SLMP-compatible devices
The SLMP communication frames supported by the FX5-CCLGN-MS are 3E and 4E frames. When SLMP communication is performed from an SLMP-compatible device to the... More Details >>
- No:39280
- Release Date:2023/01/12 16:48
- Category: MELSEC iQ-F Series , Network/Communication
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Regarding differences between instance communication and tag communication
Instance communication ・The instance ID (any number) is used to communicate with the other device. Tag communication ・The tag name (any character string) ... More Details >>
- No:45486
- Release Date:2025/11/12 13:55
- Category: MELSEC iQ-F Series , Network/Communication
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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
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Regarding replacement from 128 point type of FX3U
The FX5U CPU module has a lineup of up to 80 point. The following configuration is recommended when replacing the FX3U-128MR/ES. Recommended alternative (1... More Details >>
- No:44617
- Release Date:2024/11/28 16:13
- Category: MELSEC iQ-F Series , CPU Module
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Regarding number of occupied I/O points of intelligent function module
The number of occupied input/output points per module is 8. (Excluding some models) Occupied I/O points: Since actual occupied I/O points cannot be assigned... More Details >>
- No:44612
- Release Date:2024/11/28 16:12
- Category: MELSEC iQ-F Series , CPU Module
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Regarding number of servo amplifiers that can be connected via PDO communication
The maximum number of servo amplifiers connected to the FX5-CCLGN-MS varies according to the number of axes. Example: When connecting a 3-axis servo amplifi... More Details >>
- No:44478
- Release Date:2024/07/02 19:07
- Category: MELSEC iQ-F Series , Network/Communication
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Regarding using the MQTT Communication function in a local environment
Yes, you can use MQTT communication function even in the local network by preparing a personal computer with MQTT broker such as Eclipse Mosquitto installed.... More Details >>
- No:44367
- Release Date:2024/03/27 16:46
- Category: MELSEC iQ-F Series , Network/Communication
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Regarding using the connector of the CPU Module
The input/output cables used in the FX3GC and FX3UC basic units can be diverted to the FX5UC CPU Module (connector type). More Details >>
- No:44350
- Release Date:2024/03/27 15:44
- Category: MELSEC iQ-F Series , CPU Module
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Regarding FX5-2HC/ES restrictions
The FX5-2HC/ES must be connected to the eighth module from the power supply module (CPU Module, expansion power supply module, built-in power supply I/O Modu... More Details >>
- No:44339
- Release Date:2024/03/20 13:25
- Category: MELSEC iQ-F Series , High-Speed Counter
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