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

Uncheck "Check battery", an item of "Error Check", in the [PLC RAS setting] ([PLC Parameter] -> [PLC RAS setting]).

We do not guarantee the operation of a system that involves cross cable connections.

This occurs because software required to display the Help window is not installed as standard in Windows7. Download the

Select [Target Memory] -> [Standard ROM] in the Read from PLC window.

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

Accessible numbers of devices in one message are shown below.- 2000 coils and inputs for reading- 125 input registers an

Errors can be checked with the following error detection signals and buffer memory areas corresponding to each axis.- Ax

Personal computers have different MAC addresses and an Ethernet module hold a MAC address. Hence the MAC address that th

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Programmable Controllers MELSEC

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

CPU Module(179)
I/O Module(5)
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FAQ within [ Programmable Controllers MELSEC ]

931-940 of Total 1010

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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
Battery-less operation

Uncheck "Check battery", an item of "Error Check", in the [PLC RAS setting] ([PLC Parameter] -> [PLC RAS setting]). More Details >>
- No：22681
- Release Date：2018/09/03 17:29
- Update：2018/09/21 14:12
- Category： MELSEC-Q Series
Cross cable connections

We do not guarantee the operation of a system that involves cross cable connections. More Details >>
- No：22679
- Release Date：2018/09/03 17:29
- Category： MELSEC-Q Series
USB cable type for CPU modules

It is the miniB-type. More Details >>
- No：22677
- Release Date：2018/09/03 17:29
- Category： MELSEC-Q Series
Help window not displayed

This occurs because software required to display the Help window is not installed as standard in Windows7. Download the Windows Help program (WinHlp32.exe) f... More Details >>
- No：22674
- Release Date：2018/09/03 17:29
- Category： MELSEC-Q Series
How to read comments in the standard ROM with GX Works2

Select [Target Memory] -> [Standard ROM] in the Read from PLC window. More Details >>
- No：22673
- Release Date：2018/09/03 17:29
- Update：2018/09/21 14:05
- 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
Numbers of devices the automatic communication parameter of the MODBUS(R) interface module accept for writing and reading

Accessible numbers of devices in one message are shown below.- 2000 coils and inputs for reading- 125 input registers and holding registers for reading- 1968... More Details >>
- No：22668
- Release Date：2018/09/03 17:29
- Category： MELSEC-Q Series
How to check errors with error codes of QD75

Errors can be checked with the following error detection signals and buffer memory areas corresponding to each axis.- Axis 1 Error detection X8 Buffer memor... More Details >>
- No：22667
- Release Date：2018/09/03 17:29
- Category： MELSEC-Q Series
Ethernet communication after the replacement of an external device

Personal computers have different MAC addresses and an Ethernet module hold a MAC address. Hence the MAC address that the Ethernet module currently holds is ... More Details >>
- No：22665
- Release Date：2018/09/03 17:29
- Category： MELSEC-Q Series

931-940 of Total 1010

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