(1) The number of modules to be connected- Main block: up to 10 modules- Extension block: up to 11 modules(2) The number

At least one L series CPU is necessary when using the simple PLC communication function.

This problem occurs because the consecutive free memory space for temporarily storing the program during online change i

The following shows an example of heating/cooling control using split control. * For details, refer to the "Progra

The values are updated at the timing described below.- Current feed value: 1.8 ms- Machine feed value: 56.8 ms

The data in the devices assigned to Latch (1) or Latch (2) in the "Device Setting" window ([PLC Parameter] -> [Device

The QJ71C24N series modules with serial numbers with upper 5 digits of "10042" or later indicate compatibility with QnUD

Both of them need to be grounded. They can be shorted and grounded as one cable.

You can change the destination in [Online] -> [Specify Connection Destination]. Change the destination depending on t

For TCP protocol of SLMP communication, KeepAlive is fixed and cannot be changed. In the case of UDP protocol, it is fix

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Programmable Controllers MELSEC

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

CPU Module(185)
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FAQ within [ Programmable Controllers MELSEC ]

571-580 of Total 1023

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The number of LCPU extension blocks

(1) The number of modules to be connected- Main block: up to 10 modules- Extension block: up to 11 modules(2) The number of extension blocks- L02CPU, L02CPU-... More Details >>
- No：22750
- Release Date：2018/09/03 17:29
- Category： MELSEC-L Series
Configuration of simple PLC communication function using LCPU

At least one L series CPU is necessary when using the simple PLC communication function. More Details >>
- No：22747
- Release Date：2018/09/03 17:29
- Category： MELSEC-L Series
When a message indicating that "the memory space is insufficient" appears during online change

This problem occurs because the consecutive free memory space for temporarily storing the program during online change is insufficient. In this case, perform... More Details >>
- No：22722
- Release Date：2018/09/03 17:29
- Category： MELSEC-Q Series
Programing example of heating/cooling control

The following shows an example of heating/cooling control using split control. * For details, refer to the "Programmable Controllers MELSEC PROC... More Details >>
- No：22719
- Release Date：2018/09/03 17:29
- Update：2018/09/21 15:43
- Category： MELSEC-Q Series
Update timing of QD75 current feed value and machine feed value

The values are updated at the timing described below.- Current feed value: 1.8 ms- Machine feed value: 56.8 ms More Details >>
- No：22689
- Release Date：2018/09/03 17:29
- Category： MELSEC-Q Series
Q series device data held in the case of a power failure

The data in the devices assigned to Latch (1) or Latch (2) in the "Device Setting" window ([PLC Parameter] -> [Device Setting] window) is held when a pow... More Details >>
- No：22638
- Release Date：2018/09/03 17:29
- Update：2018/09/21 11:37
- Category： MELSEC-Q Series
Versions of the QJ71C24N modules compatible with QnUDVCPU

The QJ71C24N series modules with serial numbers with upper 5 digits of "10042" or later indicate compatibility with QnUDVCPU. More Details >>
- No：22628
- Release Date：2018/09/03 17:29
- Category： MELSEC-Q Series
Grounding FG and LG terminals of power supply module

Both of them need to be grounded. They can be shorted and grounded as one cable. More Details >>
- No：22527
- Release Date：2018/09/03 17:28
- Category： MELSEC-Q Series
How to change the specified connection destination of GX Works3

You can change the destination in [Online]-> [Specify Connection Destination]. Change the destination depending on the communication path to be used. Yo... More Details >>
- No：22472
- Release Date：2018/09/03 17:28
- Update：2018/09/19 14:31
- Category： MELSEC iQ-R Series
Regarding KeepAlive for SLMP Communication

For TCP protocol of SLMP communication, KeepAlive is fixed and cannot be changed. In the case of UDP protocol, it is fixed to not perform a keep-alive check. More Details >>
- No：45477
- Release Date：2025/11/12 13:37
- Category： MELSEC iQ-F Series , CPU Module , Network/Communication

571-580 of Total 1023

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