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Programmable Controllers MELSEC
FAQ within [ Programmable Controllers MELSEC ]
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Battery replacement for universal model QCPU
The contents of the standard RAM and latch devices are not erased if the battery replacement is completed within three minutes, which is the backup power tim... More Details >>
- No:22558
- Release Date:2018/09/03 17:29
- Category: MELSEC-Q Series
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CPU modules supporting the serial communication function
CPU modules supporting the serial communication function are as follows. - Q00UJCPU,Q00UCPU,Q01UCPU - Q02UCPU 10102 or later (with GX Works2 1.15R or l... More Details >>
- No:22530
- Release Date:2018/09/03 17:28
- Update:2018/09/20 14:37
- Category: MELSEC-Q Series
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Regarding Recommended Substitute Models for FX3G-CNV-ADP
The FX5 CPU modules allows you to add an expansion adapter without using a connector conversion adapter. Therefore, there is no Recommended Substitute Models... More Details >>
- No:44875
- Release Date:2025/03/18 10:27
- Category: MELSEC iQ-F Series , CPU Module
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Regarding the MQTT communication function retransmission function
No, there is no function to resend all the data that could not be sent. By setting Retain and QoS from FB, it is possible to resend only the latest message. More Details >>
- No:44368
- Release Date:2024/03/27 16:56
- Category: MELSEC iQ-F Series , Network/Communication
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Regarding settings when the battery is installed
From the GX Works3 settings when the optional battery is installed, it must be set to Installed in the Optional Battery Settings. Use the following proc... More Details >>
- No:44363
- Release Date:2024/03/27 17:09
- Category: MELSEC iQ-F Series , CPU Module , Engineering Software
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Regarding issuing Client Certificates to Connect with AWS IoT Core
Set the RSA strength to at least 2048 bits. Anything less than 2048 bits is not supported by AWS IoT Core and cannot be connected. More Details >>
- No:44343
- Release Date:2024/03/20 13:34
- Category: MELSEC iQ-F Series , Network/Communication
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Regarding Free Mail Service with Email Function
Free mail services that have been verified to work with the email function are Gmail, Yahoo! mail, and iCloud email.(As of July 2025) Use the encryption fun... More Details >>
- No:40058
- Release Date:2023/08/25 10:22
- Update:2025/11/11 14:31
- Category: MELSEC iQ-F Series , Network/Communication
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It is possible to connect to the cloud: MQTT broker (server) using the MQTT communication function of FX5-ENET. The MQTT communication function is supported... More Details >>
- No:40034
- Release Date:2023/08/24 15:39
- Category: MELSEC iQ-F Series , Network/Communication
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Regarding Device Memory Export/Import
Imports are not supported. Only exports are supported. More Details >>
- No:40027
- Release Date:2023/08/24 14:38
- Category: MELSEC iQ-F Series , Engineering Software
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Regarding the FX5S CPU Module Line-up
The line-up of input and output points of the FX5S CPU module is as follows. ・30 points (Input: 16 points, Output: 14 points) ・40 points (Input: 24 points,... More Details >>
- No:39340
- Release Date:2023/02/14 17:28
- Category: MELSEC iQ-F Series , CPU Module
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