Precaution about MELSECNET/H connection (2)

- Set the network module mounted in system A to station number 0 (multiplexed remote master station). Set the network module mounted in system B to any sta... 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 >>

SLD and FG wiring for CC-Link networks

Ground FG in each station. SLD and FG are internally short-circuited. More Details >>

RS-485 connection between QJ71C24N 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 >>

32-bit data assurance

To assure 32-bit data, "Network Range Assignment" of the control station must satisfy the following conditions.(1) The start device No. of LB is a multiple o... 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 >>

Duplication error in a CC-Link master station

Possible causes are as follows.(1) Another master station exists on the same line.(2) Noise is detected on the line at power on. 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 >>

Seamless communications

The CC-Link family products allow flexible programming and maintenance from any controllers for all the devices in connection. Such a communication, for whic... More Details >>

Detecting the number of disconnections when using QJ71E71-100

The number of disconnections detected can be checked by reading the buffer memory address 5203H (Disconnection detection count). Disconnections are detected ... More Details >>