Overhead time before and after the startup of an interrupt program with a MELSEC iQ-R series CPU module

Although it depends on interrupt factors, the overhead time before startup becomes 10.8 to 23.8 [us] and the time after startup becomes 6.5 to 17.4 [us]. More Details >>

How to display the network parameter setting window with GX Works3

"Network Parameter" in GX Works2 is "Module Parameter" of a "network module" in GX Works3. Click the items in the following order to display the setting win... More Details >>

Operations that can be performed with the MELSEC iQ-R series inter-module synchronization function

The inter-module synchronization function synchronizes the input or output timing of multiple I/O modules or intelligent function modules. The inter-... More Details >>

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 >>

How to check the scan time with GX Works3

You can check the processing time and scan time of the program currently being executed in "Program List Monitor". [Online] -> [Monitor] -> [Program... More Details >>

Differences between GX Works3 and GX Works2

GX Works3 provides various intuitive features such as graphic-based system configuration and an extensive module library (module label/FB) as standard. You... More Details >>

Processing time of when multiple programs are executed with a MELSEC iQ-R series CPU module

When multiple programs are executed, the processing time (program switching time) becomes "Number of program files × 0.9 [us]". More Details >>

How to check devices assigned to labels of GX Works3

GX Works3 and the MELSEC iQ-R series do not use actual devices as automatic assignment devices of local labels. The local labels use "label areas" in the "d... More Details >>

I/O assignment of PLC parameters with GX Works3

"PC Parameter" in GX Works2 is "Parameter" in GX Works3. You can set the I/O assignment from "Module Configuration" or "System Parameter". <Setting fr... More Details >>

I cannot place a main base unit in a module configuration diagram with GX Works3.

You may have already placed a main base unit in the module configuration diagram. Scroll up or down in the module configuration diagram and check if a main ... More Details >>