When a personal computer (GX Works2) is connected to the RS-232C port of a programmable controller, communications betwe

A battery is not required when a memory cassette is used. This is because the sequence programs stored in the memory cas

You can adjust by setting the constant scan in iQ-F series. Setting procedure: Navigation window > [Parameter] >

The control response parameter can set the response to the target value (SV) of PID control as either "normal" or "fast"

The CPU Module's built-in Heating/Cooling PID control function supports up to 16 channels. The following firmware versi

You can open the descriptions for each instruction by moving the cursor to the target instruction and pressing F1. You c

Parallel linking between FX5 and FX3 CPU modules is not available. The N:N Network function supports communication betwe

It can be changed. It is now possible to write to the address (user unit, pulse unit) by the DHCMOV command. However, w

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

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Programmable Controllers MELSEC

MELSEC iQ-R Series(45)
MELSEC iQ-F Series(643)

CPU Module(179)
I/O Module(5)
Analog(16)
High-Speed Counter(14)
Motion/Positioning(11)
Network/Communication(97)
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Engineering Software(61)
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Engineering Software(129)

FAQ within [ Programmable Controllers MELSEC ]

211-220 of Total 1010

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Communications with a personal computer after the communication parameters for the RS-232C communication equipment are set

When a personal computer (GX Works2) is connected to the RS-232C port of a programmable controller, communications between the personal computer and the prog... More Details >>
- No：24782
- Release Date：2019/02/27 16:10
- Category： MELSEC-F Series , Engineering Software , Main Unit
Necessity of a battery when a memory cassette is used

A battery is not required when a memory cassette is used. This is because the sequence programsstored in the memory cassette, exceptfor RAM memory cassette, ... More Details >>
- No：24770
- Release Date：2019/02/27 15:00
- Category： MELSEC-F Series , Main Unit , Accessories
Regarding scan time adjustment for replacing the FX3 Series

You can adjust by setting the constant scan in iQ-F series. Setting procedure: Navigation window > [Parameter] > [Module model name] > [CPU Paramet... More Details >>
- No：44866
- Release Date：2025/03/18 10:24
- Category： MELSEC iQ-F Series , CPU Module
Regarding Control response parameter of built-in PID Control of CPU Module

The control response parameter can set the response to the target value (SV) of PID control as either "normal" or "fast". The difference is as follows. (1)W... More Details >>
- No：44653
- Release Date：2025/03/18 10:23
- Category： MELSEC iQ-F Series , CPU Module , Analog
Regarding number of CH of CPU Module built-in Heating/Cooling PID control

The CPU Module's built-in Heating/Cooling PID control function supports up to 16 channels. The following firmware versions are required in order to use it. ... More Details >>
- No：44651
- Release Date：2025/03/18 10:22
- Category： MELSEC iQ-F Series , CPU Module , Analog
Regarding Instruction description help in GX Works3

You can open the descriptions for each instruction by moving the cursor to the target instruction and pressing F1. You can also hover the cursor over it and ... More Details >>
- No：39366
- Release Date：2023/02/15 13:06
- Category： MELSEC iQ-F Series , CPU Module , Engineering Software
Regarding the parallel link function between CPU modules

Parallel linking between FX5 and FX3 CPU modules is not available. The N:N Network function supports communication between the FX5 CPU module and the FX3 CPU... More Details >>
- No：39364
- Release Date：2023/02/15 13:05
- Category： MELSEC iQ-F Series , CPU Module , Engineering Software
Regarding changing the current address (user unit, pulse unit)

It can be changed. It is now possible to write to the address (user unit, pulse unit) by the DHCMOV command. However, writing is disabled during positioning... More Details >>
- No：39356
- Release Date：2023/02/15 13:03
- Category： MELSEC iQ-F Series , CPU Module , Motion/Positioning
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
Regarding the line tracing function

It is not supported. More Details >>
- No：39323
- Release Date：2023/02/14 09:01
- Category： MELSEC iQ-F Series , CPU Module , Engineering Software

211-220 of Total 1010

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