The boot operation from the standard ROM is not possible.The program memory of universal model QCPU is a flash ROM.Thus,

Check the following points.(1) Transfer Setup is properly configured.(2) The USB driver is properly recognized.

You can configure the setting in "Interrupt Setting from Internal Timer" of the CPU parameter. <Interrupt period set

When the block number of the file register (R) is saved and stored, the overhead time becomes 35.9 [us]. When the number

Connection is not allowed. For FX5-CCL-MS, only remote I/O stations, remote device stations and intelligent device stati

From GXWorks3, use [Online] -[CPU Memory Operation] to initialize. How to check the IP address is as follows. They are s

For the iQ-F series, use the following instructions. For signed 16 bit integers, use the INT2FLT instruction. For unsign

HIOEN/DHIOEN instructions cannot be written with Online Program Change. In addition, circuit blocks containing positioni

The following restrictions apply to the external input/output forced ON/OFF function. ・Since RUN contact setting is RUN/

The FX5-ENET module parameter of GX Works3 can send up to 10 messages and the module FB can send up to 256 characters at

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 ]

551-560 of Total 1023

prev 56 / 103page next

Boot operation from the standard ROM

The boot operation from the standard ROM is not possible.The program memory of universal model QCPU is a flash ROM.Thus, writing in the program memory achiev... More Details >>
- No：22553
- Release Date：2018/09/03 17:28
- Category： MELSEC-Q Series
Unable to communicate via USB connection

Check the following points.(1) Transfer Setup is properly configured.(2) The USB driver is properly recognized. More Details >>
- No：22511
- Release Date：2018/09/03 17:28
- Category： MELSEC-Q Series
Interrupt period setting of fixed scan interrupts of MELSEC iQ-R series

You can configure the setting in "Interrupt Setting from Internal Timer" of the CPU parameter. <Interrupt period setting> [Navigation Window]-> ... More Details >>
- No：22490
- Release Date：2018/09/03 17:28
- Update：2018/09/20 09:46
- Category： MELSEC iQ-R Series
Overhead time of when a fixed scan execution type program of the MELSEC iQ-R series CPU module is executed

When the block number of the file register (R) is saved and stored, the overhead time becomes 35.9 [us]. When the number of the file register is not saved o... More Details >>
- No：22465
- Release Date：2018/09/03 17:28
- Update：2018/09/19 11:57
- Category： MELSEC iQ-R Series
Regarding the connection configuration of FX5-CCL-MS

Connection is not allowed. For FX5-CCL-MS, only remote I/O stations, remote device stations andintelligent device stationscan be connected. More Details >>
- No：22316
- Release Date：2018/08/30 13:55
- Update：2023/07/03 17:19
- Category： MELSEC iQ-F Series , Network/Communication
Regarding initialization procedure

From GXWorks3, use [Online] -[CPU Memory Operation] to initialize. How to check the IP address is as follows. They are stored in special registers SD8492 a... More Details >>
- No：45481
- Release Date：2025/11/12 13:54
- Category： MELSEC iQ-F Series , CPU Module , Engineering Software
Regarding replacing FLT Instructions

For the iQ-F series, use the following instructions. For signed 16 bit integers, use the INT2FLT instruction. For unsigned 16 bit integers, use the UINT2FL... More Details >>
- No：45479
- Release Date：2025/11/12 13:54
- Category： MELSEC iQ-F Series , CPU Module
Regarding Circuit Blocks that cannot be written with Online Program Change.

HIOEN/DHIOEN instructions cannot be written with Online Program Change. In addition, circuit blocks containing positioning instructions or network instructio... More Details >>
- No：44354
- Release Date：2024/03/27 15:47
- Category： MELSEC iQ-F Series , CPU Module
Regarding restrictions on the external input/output forced ON/OFF function

The following restrictions apply to the external input/output forced ON/OFF function. ・Since RUN contact setting is RUN/STOP by external signal, forced ON/O... More Details >>
- No：44332
- Release Date：2024/03/20 12:58
- Category： MELSEC iQ-F Series , CPU Module
Regarding the Number of Sending Addresses for Email function

The FX5-ENET module parameter of GX Works3 can send up to 10 messages and the module FB can send up to 256 characters at a time. By entering multiple email ... More Details >>
- No：40052
- Release Date：2023/08/25 10:23
- Category： MELSEC iQ-F Series , Network/Communication

551-560 of Total 1023

Inquiries

page top