Opening a Structured Text program in GX Developer

Install the latest version again. Check "Structured Text (ST) Language Programming Function" and install it. More Details >>

Operation performed when file registers are read

Checking "Device Memory" does not read file registers. Switch the Target Memory for "PLC Data" to "Standard RAM" and check "File Register" in the Read from P... More Details >>

CPU operation when the time setting failed

When an error occurs, the operation can be stopped or continued according to the "At Error Occurrence" setting.(The default is "Continue".) More Details >>

Precautions for insertion and removal of SD memory card

Turn off the SD memory card switch and check that the LED indicator is off before insertion or removal of an SD memory card. 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 >>

Battery replacement for LCPU

The contents of the standard RAM and latch devices are not erased if the battery replacement is completed within three minutes, which is the backup power tim... More Details >>

How to check automatically assigned devices in GX Works2

Click the local label to be checked and select "Cross Reference" from the right-click menu to check the devices. More Details >>

Input derating

Input derating is the percentage of simultaneous ON points, one of the specifications applied when input modules are used. When QX42 is used in a temperatur... More Details >>

Remedy for the division-related operation error

The operation error occurs when the divisor is 0.Create a program in which a comparison operation instruction or another method executes a division instructi... More Details >>

USB cable type for CPU modules

It is type B. More Details >>