The MQTT communication function cannot publish and subscribe at the same time. A program for the MQTT communication fun

There is no setting or method to disable the login screen for the web server function.

FX5U/FX5UC/FX5S CPU modules are supported. Up to 2 axes are available in GX Works3 parameter settings. In addition, up t

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

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

MODBUS serial communication over multiple communication channels is possible. The MODBUS serial communication settings c

Parameters can be set when connecting the MELSEC iQ-F series with FX5-CCL-MS(CC-Link system master/intelligent device).

It is possible to use latch devices or I/O devices (X/Y) for link refresh devices. However, when using I/O devices (X/Y)

Numerical value data 0 to 255 corresponding to the scale position is stored in the special data register. You can create

The Web server function allows you to log in from up to four devices at the same time. You can't log in from the fifth m

FAQ

FAQAbout Products

Font Size
S
M
L

FAQ > Controllers > Programmable Controllers MELSEC

FAQ

Inquiries

Keyword Search

You can search two or more words separated by a space.

 AND : Put a space between the words in a keyphrase.
 OR  : Add a vertical bar ( | ) between the words in a keyphrase.
 NOT : Add a minus sign ( - ) followed by the words that you would like to exclude.

Result Type

Text Search

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)
Motion/Positioning(11)
Network/Communication(106)
Option(9)
Engineering Software(62)
Safety Control(1)

Engineering Software(129)

FAQ within [ Programmable Controllers MELSEC ]

61-70 of Total 1023

prev 7 / 103page next

Regarding simultaneous execution of the MQTT communication function

The MQTT communication function cannot publish and subscribe at the same time. A program for the MQTT communication function is created using FB, but it c... More Details >>
- No：44345
- Release Date：2024/03/27 15:25
- Category： MELSEC iQ-F Series , Network/Communication
Regarding the login screen for the Web Server Function

There is no setting or method to disable the login screen for the web server function. More Details >>
- No：44357
- Release Date：2024/03/27 15:52
- Category： MELSEC iQ-F Series , CPU Module , Network/Communication
Regarding CW/CCW(Forward pulse/Reverse pulse) output of the built-in positioning function

FX5U/FX5UC/FX5S CPU modules are supported. Up to 2 axes are available in GX Works3 parameter settings. In addition, up to 8 axes can be added by adding a hi... More Details >>
- No：22306
- Release Date：2018/08/30 13:55
- Update：2023/06/23 10:48
- Category： MELSEC iQ-F Series , CPU Module , Motion/Positioning
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
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
Regarding expansion of communication ports

MODBUS serial communication over multiple communication channels is possible. The MODBUS serial communication settings can be set from GX Works3 parameters. More Details >>
- No：22323
- Release Date：2018/08/30 13:55
- Update：2025/11/11 14:20
- Category： MELSEC iQ-F Series , CPU Module , Network/Communication
Regarding CC-Link settings using GX Works3

Parameters can be set when connecting the MELSEC iQ-F series with FX5-CCL-MS(CC-Link system master/intelligent device). However, when connecting with FX3U-1... More Details >>
- No：22317
- Release Date：2018/08/30 13:55
- Update：2023/06/23 10:19
- Category： MELSEC iQ-F Series , CPU Module , Engineering Software , Network/Communication
Regarding the link refresh settings of FX5-CCL-MS

It is possible to use latch devices or I/O devices (X/Y) for link refresh devices. However, when using I/O devices (X/Y), use I/O numbers (such as X1000 ~/Y... More Details >>
- No：22308
- Release Date：2018/08/30 13:55
- Update：2023/06/23 10:37
- Category： MELSEC iQ-F Series , CPU Module , Engineering Software , Network/Communication
How to use variable analog potentiometers in FX3S

Numerical value data 0 to 255 corresponding tothe scale position is stored in the special data register. You can create the analog timer (volume type) by sp... More Details >>
- No：22279
- Release Date：2018/08/30 13:48
- Update：2019/02/14 10:05
- Category： MELSEC-F Series , Main Unit , Analog Control
Regarding simultaneous access to Web Server function

The Web server function allows you to log in from up to four devices at the same time. You can't log in from the fifth machine. More Details >>
- No：39330
- Release Date：2023/02/14 09:06
- Category： MELSEC iQ-F Series , CPU Module , Network/Communication

61-70 of Total 1023

Inquiries

page top