Clearing data in the QJ71C24N's receiving area buffer memory

Receiving data overwrites the buffer memory data. Writing 0 with a program can be performed but is unnecessary as the data is overwritten. 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 >>

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 >>

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 >>

Communication between CPU modules established by QJ71E71

The communication between QJ71E71 series modules can be established if READ/WRITE instructions are used. More Details >>

Connecting QJ71C24N to an external device that has no DTR signal

Carry out DTR and DSR wiring that returns signals on QJ71C24N(-R2). More Details >>

Whether or not multiple QJ72LP25-25 modules can be mounted

No, only a single QJ72LP25-25 can be mounted (and is to be mounted on the CPU slot on a main base unit). More Details >>

Applicable size for plug-in connector socket block on QJ71C24N-R4

Use the plate terminal packaged with the module. The size of the plate terminal is 1.0 mm wide with a thickness of 0.8 mm. More Details >>

Station number settings for MELSECNET/H networks

A station number can be skipped by setting the station as a reserved station. More Details >>

RS-485 connection between LJ71C24 and an external device

Short between SDA and RDA and between SDB and RDB, and then connect them to + (Data-A) and - (Data-B) on the external device. More Details >>