Because NTP is compatible with SNTP, you can use an NTP server for the time setting.

(1) Use separate cables for the AC control circuit and the external input signals of an analog input module to avoid the

When an ACPU module is replaced with a QCPU module, programs for the ACPU module can be used by changing the PLC type in

The capacity file registers currently have can be checked in the file register setting section ([PLC Parameter] -> [P

The communication between the Ethernet interface module and FL-net (OPCN-2) interface module cannot be established.

The maximum number of steps that an online change can process at a time is 512.

The communication can be established using the following methods. - Using the socket communication function of both CPU

Copy the COMMENT into the MAIN of comments by program before changing the PLC type.The basic model QCPU cannot deal with

Auto refresh setting is for storing the buffer memory data of a MODBUS (R) interface module to specified devices of a CP

If comments and symbolic information are stored in the program memory, write them in the standard ROM.

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Programmable Controllers MELSEC

MELSEC iQ-R Series(45)
MELSEC iQ-F Series(672)

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FAQ within [ Programmable Controllers MELSEC ]

611-620 of Total 1023

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NTP compatibility of the SNTP function of a built-in Ethernet port QCPU

Because NTP is compatible with SNTP, you can use an NTP server for the time setting. More Details >>
- No：22713
- Release Date：2018/09/03 17:29
- Category： MELSEC-Q Series
How to suppress the instability of digital-converted output values

(1) Use separate cables for the AC control circuit and the external input signals of an analog input module to avoid the influence of the AC side surges an... More Details >>
- No：22709
- Release Date：2018/09/03 17:29
- Update：2018/09/21 15:11
- Category： MELSEC-Q Series
Compatibility between the A series modules and Q series modules

When an ACPU module is replaced with a QCPU module, programs for the ACPU module can be used by changing the PLC type in GX Developer. However, the programs ... More Details >>
- No：22696
- Release Date：2018/09/03 17:29
- Update：2018/09/21 14:21
- Category： MELSEC-Q Series
How to check the capacity of the file registers in use

The capacity file registers currently have can be checked in the file register setting section ([PLC Parameter] -> [PLC File] tab). More Details >>
- No：22694
- Release Date：2018/09/03 17:29
- Update：2018/09/21 14:19
- Category： MELSEC-Q Series
Communication between Ethernet and FL-net

The communication between the Ethernet interface module and FL-net (OPCN-2) interface module cannot be established. More Details >>
- No：22683
- Release Date：2018/09/03 17:29
- Category： MELSEC-Q Series
The numbers of POUs and steps of "Allocate Memory for 'Online Change'" in GX Works2

The maximum number of steps that an online change can process at a time is 512. More Details >>
- No：22672
- Release Date：2018/09/03 17:29
- Category： MELSEC-Q Series
Communication between the Ethernet port on the universal model QCPU and the built-in Ethernet port on the LCPU

The communication can be established using the following methods. - Using the socket communication function of both CPU modules - Using the simple PLC comm... More Details >>
- No：22664
- Release Date：2018/09/03 17:29
- Update：2018/09/21 13:51
- Category： MELSEC-Q Series
COMMENT to disappear after a PLC type change

Copy the COMMENT into the MAIN of comments by program before changing the PLC type.The basic model QCPU cannot deal with common comments. More Details >>
- No：22625
- Release Date：2018/09/03 17:29
- Category： MELSEC-Q Series
Auto refresh setting in GX Configurator -MB

Auto refresh setting is for storing the buffer memory data of a MODBUS (R) interface module to specified devices of a CPU module and for storing device data ... More Details >>
- No：22573
- Release Date：2018/09/03 17:29
- Category： MELSEC-Q Series
Corrective action when the program size exceeds the capacity

If comments and symbolic information are stored in the program memory, write them in the standard ROM. More Details >>
- No：22560
- Release Date：2018/09/03 17:29
- Category： MELSEC-Q Series

611-620 of Total 1023

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