Specify the file in the Write to PLC window and execute writing.

It includes sample comments for special relay/special register and the intelligent function module. On the menu of GX W

The constant scan initial value in the simulation function is 100ms. Thus, the value of SM410(0.1sec. clock) is OFF in e

You cannot mount Q series modules on a MELSEC iQ-R series base unit. Use an RQ extension base unit (RQ65B, RQ68B, or RQ6

The mechanical life of the module is 20 million times or longer. The relay life (contact switching life) of the module v

The EtherNet/IP settings of the FX5-EIP can be set in GX Works3. No additional tools are required.

It is not possible to connect multiple devices with different communication speeds and parities.

When the FX5 CPU Module is used as the master station, the maximum number of devices connected to 1 network is 16. The f

The FX5U CPU module has a lineup of up to 80 point. The following configuration is recommended when replacing the FX3U-1

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Programmable Controllers MELSEC

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

CPU Module(185)
I/O Module(5)
Analog(16)
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Engineering Software(62)
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Engineering Software(129)

FAQ within [ Programmable Controllers MELSEC ]

491-500 of Total 1023

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How to write to file registers in Q series

Specify the file in the Write to PLC window and execute writing. More Details >>
- No：22585
- Release Date：2018/09/03 17:29
- Category： MELSEC-Q Series
Sample comment of GX Works2

It includes sample comments for special relay/special register and the intelligent function module. On the menu of GX Works2, select [Edit] -> [Import ... More Details >>
- No：22581
- Release Date：2018/09/03 17:29
- Update：2018/09/20 17:12
- Category： MELSEC-Q Series
Usage of PIDCONT instruction in process CPU

No. More Details >>
- No：22536
- Release Date：2018/09/03 17:28
- Category： MELSEC-Q Series
Behavior of special relay in simulation

The constant scan initial value in the simulation function is 100ms. Thus, the value of SM410(0.1sec. clock) is OFF in each scan. To turn ON/OFF SM410, set ... More Details >>
- No：22521
- Release Date：2018/09/03 17:28
- Update：2018/09/20 14:23
- Category： MELSEC-Q Series
Mounting Q series modules on a MELSEC iQ-R series base unit

You cannot mount Q series modules on a MELSEC iQ-R series base unit. Use an RQ extension base unit (RQ65B, RQ68B, or RQ612B). You cannot mount some modules... More Details >>
- No：22466
- Release Date：2018/09/03 17:28
- Update：2018/09/19 11:58
- Category： MELSEC iQ-R Series
Relay life of the MELSEC iQ-R series relay output module (RY10R2)

The mechanical life of the module is 20 million times or longer. The relay life (contact switching life) of the module varies depending on the usage environ... More Details >>
- No：22457
- Release Date：2018/09/03 17:28
- Update：2018/09/21 16:12
- Category： MELSEC iQ-R Series
Regarding understanding EtherNet/IP Settings for FX5-EIP

The EtherNet/IP settings of the FX5-EIP can be set in GX Works3. No additional tools are required. More Details >>
- No：45487
- Release Date：2025/11/12 13:56
- Category： MELSEC iQ-F Series , Network/Communication
Regarding protocol mixing in Serial Communication

It is not possible to connect multiple devices with different communication speeds and parities. More Details >>
- No：45480
- Release Date：2025/11/12 13:54
- Category： MELSEC iQ-F Series , CPU Module , Network/Communication
Regarding number of CC-Link IE field network Basic connections

When the FX5 CPU Module is used as the master station, the maximum number of devices connected to 1 network is 16. The following firmware versions are requi... More Details >>
- No：44652
- Release Date：2025/03/18 10:22
- Category： MELSEC iQ-F Series , CPU Module , Network/Communication
Regarding replacement from 128 point type of FX3U

The FX5U CPU module has a lineup of up to 80 point. The following configuration is recommended when replacing the FX3U-128MR/ES. Recommended alternative (1... More Details >>
- No：44617
- Release Date：2024/11/28 16:13
- Category： MELSEC iQ-F Series , CPU Module

491-500 of Total 1023

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