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

Programs and parameters can be copied using the memory copy function.There are the following two methods of executing th

The life expectancy is determined by the following calculation.Life expectancy (year) = Total writable size (GB) / 1 yea

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

Connect with a straight cable using a hub. For more details, refer to the following manual. - FL-net (OPCN-2) Interface

Select [Tool] -> [Options] from the menu of GX Developer and open <> tab.Then select "Don't write to PLC" in "A

File registers R can be used for data whose size is exceeding 32k points with RSET instruction, which is a block switc

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

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

The overall cable distance and station-to-station distance depend on the version and the transmission speed. Figure 1 s

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Programmable Controllers MELSEC

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

CPU Module(179)
I/O Module(5)
Analog(16)
High-Speed Counter(14)
Motion/Positioning(11)
Network/Communication(97)
Option(9)
Engineering Software(61)
Safety Control(1)

Engineering Software(129)

FAQ within [ Programmable Controllers MELSEC ]

921-930 of Total 1010

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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
Copying programs when replacing the CPU module

Programs and parameters can be copied using the memory copy function.There are the following two methods of executing the memory copy function.- Using the me... More Details >>
- No：22644
- Release Date：2018/09/03 17:29
- Category： MELSEC-Q Series
Life expectancy of the CompactFlash card used in the high speed data logger module

The life expectancy is determined by the following calculation.Life expectancy (year) = Total writable size (GB) / 1 year write size (GB/year)For more detail... More Details >>
- No：22592
- 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
Cable used for FL-net

Connect with a straight cable using a hub. For more details, refer to the following manual. - FL-net (OPCN-2) Interface Module User's Manual More Details >>
- No：22574
- Release Date：2018/09/03 17:29
- Update：2018/09/20 16:55
- Category： MELSEC-Q Series
Replacing a device in GX Developer

Select [Tool] -> [Options] from the menu of GX Developer and open <<Program common>> tab.Then select "Don't write to PLC" in "After conversion... More Details >>
- No：22565
- Release Date：2018/09/03 17:29
- Category： MELSEC-Q Series
How to use file registers R in the Q series

File registers R can be used for data whose size is exceeding 32k points with RSET instruction, which is a block switching instruction. Use file registers... More Details >>
- No：22525
- Release Date：2018/09/03 17:28
- Update：2018/09/20 14:29
- 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
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
Overall cable distance and station-to-station distance in CC-Link networks

The overall cable distance and station-to-station distance depend on the version and the transmission speed. Figure 1 shows the case with Ver.1.10-compatibl... More Details >>
- No：23028
- Release Date：2018/09/03 17:31
- Update：2018/09/26 10:14
- Category： Network related products

921-930 of Total 1010

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