Cause of file register reset by latch clear operation in universal model QCPU

If Latch (1) is set in the device setting of PLC parameter, the contents of file registers are cleared by latch clear operation. Set Latch (2) to maintain t... More Details >>

File register setting window

No. More Details >>

Label programs in GX Works2

Change the program using the following method.Write the label program to the programmable controller CPU and perform PLC read for the parameters and the prog... More Details >>

How to display local comments in GX Works2

In the "Reference/Reflection Target for Device Comment" window, switch the "Specify the Reference/Reflection" from "Global" to "Local". More Details >>

Writing files in CSV format

Use SP.FWRITE instruction to save the data to an ATA card in CSV format.For Q00UJCPU, Q00UCPU, and Q01UCPU, however, memory cards cannot be used thus data ca... 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 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 >>

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 >>

Error code "2110" in LCPU

The error code "2110" is "SP.UNIT ERROR.". This error may be caused by one of the following factors.(1) The module that has been specified by a FROM/TO instr... More Details >>

The cross reference window is not displayed.

Select [View]-> [Cross reference window] from the menu in GX Developer to display the cross reference window. More Details >>