Input/output signal

Check if 24 VDC power is supplied to "1A7" (pin No.) of the external input signal connector. More Details >>

Servo status

Yes. You can check the servo status through the following monitor data. • "[Md.108] Servo status 1" • "[Md.125] Servo status 3" (QD77MS, LD77MS, LD77MH) ... More Details >>

How to check the error history of the QJ71C24N with GX Developer

You can check the error history in the module detailed information in the system monitor of GX Developer. More Details >>

Connecting terminating resistors for CC-Link communication

Connect terminating resistors to both ends of physical cables.A master station is not necessarily required to be connected to either end of its network. More Details >>

Limitation on the number of levels of cascade connections when QJ71E71-100 is used

If a repeater hub is used, 10BASE-T allows a maximum of four levels of cascade connections and 100BASE-TX allows a maximum of two levels of cascade connectio... More Details >>

What makes the ERR LED flash in a CC-Link network

A link error has occurred in one of the slave stations in connection.Master station: Check the parameter again.Slave station: Reassess the power supply, the ... More Details >>

CC-Link master module settings

If each master module controls their own CC-Link networks, all master modules can be set as station 0 even though they are controlled by the same CPU. More Details >>

Difference between the CC-Link IE Controller Network and a MELSECNET/H network

The CC-Link IE Controller Network is an improved system that has a higher processing speed and a larger data capacity than the MELSECNET/H network system (PL... More Details >>

Link register assignments in MELSECNET/10 networks

For any type of MELSECNET network (II, /10, and H), B and W devices with the same number cannot be used for multiple stations as write areas. Following th... More Details >>

Terminating resistors for RS-422 communication of QJ71C24N

The resistance value is 330 ohm, 1/4 W. More Details >>