How to paste values in the device batch monitor window into an Excel sheet

Copy and paste operations cannot be carried out for values displayed in the device batch monitor window. To paste the values into an Excel sheet, read the d... More Details >>

GX Developer's compatibility with QnUDVCPU

GX Developer does not support QnUDVCPU. Please use GX Works2 instead. More Details >>

Battery install position in LCPU

Open the cover at the bottom of the CPU module and install the battery. More Details >>

LCPU internal clock synchronization

Use the time setting function to synchronize the internal clock. More Details >>

LCPU built-in Ethernet port setting when using the simple PLC communication function

The following settings are required for the "Open Setting" for the number of connected external devices.- Protocol: "UDP"- Open System: "MELSOFT connection" More Details >>

Ethernet system configuration of a redundant system

The following figure shows the basic configuration. When a control system Ethernet module is faulty or disconnected, the system is switched at a disco... More Details >>

Whether or not device indirect specifications in structured ladder programs are allowed

Indirect specifications with "＠" cannot be used in structured ladder programs and the Structured Text. Use indirect specifications in a ladder language program. More Details >>

Setting of "Target MODBUS(R) device head number"

Set "(Last five digits of actual device number) - 1" for the Target MODBUS(R) device head number.Example) For the holding register 400018, set "17". More Details >>

Battery life in the universal model QCPU

It depends on the model of the CPU module, the amount of battery consumption, and the power-on time ratio. Example) For Q06UDHCPU with power-on time ratio... More Details >>

Counting operation of QD62

The corresponding operation depends on the counter type selected. (1) If "Linear Counter" is selected If the present counter value exceeds the upper limi... More Details >>