Cause to turn on the ERR LED of a CC-Link master module

All stations communication error of a slave station.When POWER of the slave station is off, check if 24 V DC has been supplied.When POWER is on, check the st... More Details >>

How to check errors in a CC-Link master station

When an error has occurred in the master station (including the standby master station), the data link control cannot be performed, and you cannot check erro... 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 >>

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 >>

Data length for fixed buffer data communications by QJ71E71

The units of send data and receive data are shown below. - Fixed buffer data communications with the "Procedure Exist" control method: Words - Fixed buff... More Details >>

Precaution about MELSECNET/H connection (1)

- Set successive station numbers for the network modules in system A and system B in a redundant system. (Station number 0 cannot be set.) - Match "host... More Details >>

Receiving data when no receive complete code is designated (QJ71C24N)

Data are received on a received data count basis. If there is no receive complete code and variable length data is received, the data is received at every no... More Details >>

CC-Link IE Controller cable standard

Use the cables that meet the IEC60793-2-10 Types A1a.1 optical fiber standard. The connectors are LC (duplex) connectors. Two cores are required.The core di... More Details >>

Setting required to skip CC-Link slave station numbers

A CC-Link slave station number can be skipped by assigning the skipped number to a reserved station. A reserved station is counted as one of all the connecte... More Details >>

Connecting terminating resistors to the sending end and the receiving end in communication of QJ71C24N

Yes. More Details >>