Receiving back (echoing back) the same data sent from QJ71C24N

When data is sent from the RS-422/485 interface through RS-485 (2-wire type) communication and the same data comes back to RDA or RDB, we call it echo back. ... More Details >>

Using send FBs/receive FBs simultaneously

If multiple send FBs/receive FBs are simultaneously executed, the FBs do not function properly.When there are multiple send FBs, do not execute two or more s... More Details >>

Print function of GX Developer

The Print Preview window of GX Developer is a function for checking a print image, made to a specification that allows display of only the first page. A page... More Details >>

Statements of GX Works2 and the scan time

The input method for statements, either "PLC" or "Peripheral", makes a difference. - If "PLC" is set for statements, they are written into the program mem... More Details >>

Languages supported by structured projects

Yes. More Details >>

Use of 4E frame for built-in Ethernet port of LCPU

The built-in Ethernet port in the L series is compatible only with the QnA-compatible 3E frame. The 4E frame is not supported. More Details >>

Connection status detection between a hub and the built-in Ethernet port of LCPU

The bit 10 of the special register SD1288 provides the connection status to a hub. When the bit 10 of SD1288 is ON, a hub is connected. More Details >>

NTP support by the SNTP function of LCPU with built-in Ethernet port

NTP and SNTP are compatible. Therefore, an NTP server can be used for clock setting. More Details >>

Recommended cables for the MODBUS(R) interface module QJ71MT91

For 100BASE-TX, shielded twisted pair cables (STP cables) with category 5 can be used.For 10BASE-T, Straight and unshielded twisted pair cables (UTP cables) ... More Details >>

GX Works2's compatibility with Monitor (write mode)

From version 1.62Q, GX Works2 supports Monitor (write mode). Pressing Shift+F4 allows an online change. More Details >>