Grounding of CC-Link

The functional grounding is applied to ensure the reliability of the communication. More Details >>

Limitation on the number of MELSOFT products that can be connected with the QJ71E71

In the TCP/IP connection, you can connect up to 17 MELSOFT products at the same time using a dedicated connection for system and the connections for users 1 ... More Details >>

Using Ethernet UTP cables for the CC-Link IE Controller

Ethernet UTP cables cannot be used. More Details >>

Link data from communication error stations in a CC-Link network

The remote input RX of the master station and the remote input RX and remote output RY of local stations clear/hold the data from an error station according ... More Details >>

Unit of receive data used by the QJ71C24N series pre-defined protocol support function

The fixed data is used for specific codes and character strings such as a command. Setting a device is not required. More Details >>

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 >>

Effect on sequence scans in MELSECNET/H networks

It is necessary to reduce the link refresh time of the MELSECNET/H network in order to reduce the scan time. The link refresh time can be reduced by reducin... More Details >>

PLC parameter setting for QJ61BT11N

If the Network Parameter is used, CC-Link communication does not need the Select setting in the I/O assignment setting of the PLC parameter.If the parameter ... More Details >>

Terminating resistors for RS-485 communication of QJ71C24N

The resistance value is 110 ohm, 1/2 W. More Details >>

How refresh devices for CC-Link remote inputs and outputs are assigned

The refresh device setting of the CC-Link parameter assigns any devices to the I/O numbers greater than those assigned to the modules on the same base unit. ... More Details >>