Cascade connections between hubs in the CC-Link IE Field Network

UP to 20 levels of cascade connections can be made. More Details >>

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 >>

Usage of PIDCONT instruction in process CPU

No. More Details >>

How to write to file registers in Q series

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

FL-net interface module setting

The auto refresh setting is not required. However, making the setting can reduce communication programs. More Details >>

Fixed buffer data area

The fixed buffer data areas in the buffer memory are used for communication for FROM/TO instructions. The areas used in communication for FROM/TO instruction... More Details >>

Communication between the Ethernet port on the universal model QCPU and the built-in Ethernet port on the LCPU

The communication can be established using the following methods. - Using the socket communication function of both CPU modules - Using the simple PLC comm... More Details >>

QJ71E71-100's compatibility with the automatic cable type (straight or cross) recognizing function

QJ71E71-100 does not support the AutoMDI/MDI-X function (automatic cable type (straight or cross) recognizing feature). More Details >>

About network parameters when building MELSECNET/10 with Q02HCPU-A

Q02(H)CPU-A is the AnUCPU equivalent. When establishing a MELSECNET/10 network, set the refresh parameter with which SB/SW data is transferred to "Y/D" or o... More Details >>

Memory allocation for online change in GX Developer

Select [Online] -> [Write to PLC] on the menu of GX Developer, open the [File selection] tab, and press "Param + Prog" button. Then open the [Program] ta... More Details >>