The universal model QCPU modules have their standard ROM but boot operation from the standard ROM is impossible. Boot th

The user account control (UAC) setting needs to be changed.For more details, refer to Appendix 8.2 of the following manu

(1) When a momentary power failure occurs for a period not longer than the allowable momentary power failure time W

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

In the communication of the CC-Link IE Field Network synchronous communication function, you can synchronize the timing

The MELSEC iQ-R series CPU module has "IP filter function" and "remote password function" as security functions. With th

You can use a Q series 18-point screw terminal block with a MELSEC iQ-R series terminal block type I/O module or analog

You can use "Q6BAT" and "Q7BAT". You cannot use "Q8BAT".

For the MELSEC-F series, only DC power supply type can use an external power supply.

Instance communication ・The instance ID (any number) is used to communicate with the other device. Tag communication ・Th

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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)
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 ]

731-740 of Total 1023

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Boot operation from the standard ROM in the universal model QCPU

The universal model QCPU modules have their standard ROM but boot operation from the standard ROM is impossible. Boot the module from a memory card. More Details >>
- No：22602
- Release Date：2018/09/03 17:29
- Update：2018/09/20 18:01
- Category： MELSEC-Q Series
"No administrator authority" warning displayed in MX Component

The user account control (UAC) setting needs to be changed.For more details, refer to Appendix 8.2 of the following manual.- MX Component Version 3 Operating... More Details >>
- No：22590
- Release Date：2018/09/03 17:29
- Category： MELSEC-Q Series
Behavior of sequence program in event of momentary power failure in QCPU

(1) When a momentary power failure occurs for a period not longer than the allowable momentary power failure time When the momentary power failure occurs, t... More Details >>
- No：22587
- Release Date：2018/09/03 17:29
- Update：2018/09/20 17:41
- 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
Combination of the MELSEC iQ-R series inter-module synchronization function and the CC-Link IE Field Network synchronous communication function

In the communication of the CC-Link IE Field Network synchronous communication function, you can synchronize the timing to send/receive data with the inter-... More Details >>
- No：22493
- Release Date：2018/09/03 17:28
- Update：2018/09/20 11:10
- Category： MELSEC iQ-R Series
How to prevent unauthorized access to MELSEC iQ-R series CPU modules via a network

The MELSEC iQ-R series CPU module has "IP filter function" and "remote password function" as security functions. With the "IP filter function", you can set ... More Details >>
- No：22478
- Release Date：2018/09/03 17:28
- Update：2018/09/19 14:58
- Category： MELSEC iQ-R Series
Using Q series terminal blocks and connectors with MELSEC iQ-R series modules

You can use a Q series 18-point screw terminal block with a MELSEC iQ-R series terminal block type I/O module or analog module. For a 40-pin connector type ... More Details >>
- No：22474
- Release Date：2018/09/03 17:28
- Update：2018/09/19 14:37
- Category： MELSEC iQ-R Series
Models of batteries that can be used with MELSEC iQ-R series CPU modules

You can use "Q6BAT" and "Q7BAT". You cannot use "Q8BAT". More Details >>
- No：22469
- Release Date：2018/09/03 17:28
- Category： MELSEC iQ-R Series
External power supply for input(MELSEC-F)

For the MELSEC-F series, only DC power supply type can use an external power supply. More Details >>
- No：22268
- Release Date：2018/08/30 13:48
- Category： MELSEC-F Series , Main Unit
Regarding differences between instance communication and tag communication

Instance communication ・The instance ID (any number) is used to communicate with the other device. Tag communication ・The tag name (any character string) ... More Details >>
- No：45486
- Release Date：2025/11/12 13:55
- Category： MELSEC iQ-F Series , Network/Communication

731-740 of Total 1023

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