An error (error code: F1028) occurs when compilation is executed in GX Works2.

You have used the device set as the automatic assignment device for labels in the program. Change the device with the one out of the range or change the auto... More Details >>

How to check the scan time (MELSEC-F series)

The present scan time is stored in D8010. Monitor the valueusing a programming tool such as GX Works2 and GX Developer. More Details >>

Setting online change in GX Works2

Select [Compile] -> [Online Program Change] from the menu, and execute online change. More Details >>

Automatically assigned devices in GX Works2

Yes.Beginning with the device in the "Device/Label Automatic-Assign Setting" window, devices are assigned in descending order (from the greatest device numbe... More Details >>

Index modifier of bit devices in the FX3G series

The FX3G series does not support the index modifier for the bit devices. The FX3U/FX3UC series supports this function. More Details >>

Assignment of input/output numbers (MELSEC-F series)

Octal numbers are assigned as input/output numbers for the MELSEC-F series. The octal number system uses the digits from 0 to 7 → from 10 to 17 → from 20 to... More Details >>

Special auxiliary relay which is always on (MELSEC-F)

M8000 More Details >>

Transferring/editing programs in the previous FX programmable controllers using GX Works2

The earlier series of the FX programmable controllers are compatible with the latest series of the FX programmable controllers. More Details >>

I cannot select [Transfer Setup] in GX Developer because it is displayed in gray.

You cannot select the item while the programmable controller is being monitored. Execute [Close all windows] of [Window] from the tool bar, and check if Tra... More Details >>

Distinguishing the usage of standard counters and high-speed counters

Standard counters offer counting up to 10Hz. For high-speed input signals which exceed 10Hz, use high-speed counters,interruption function, or another proce... More Details >>