Station number setting in the "PLC System(2)" tab of PLC Parameter setting on GX Developer when non-protocol communication is performed

The station number setting is not required for non-protocol communication. More Details >>

Supported versions of the FX3G/FX3GC series main units for the CC-Link parameter settings of GX Works2

Ver2.00 or later is applicable. (GX Works2 with Ver. 1.87R or later is applicable.) The version of main units can be checked with the last three digits of t... More Details >>

Models from the FX programmable controllers that support the extended register (R)

The following models from the FX3 series support the extended register (R). FX3U/FX3UC series: R0-R32767, FX3G series: R0-R23999 More Details >>

Scan time while operation of a programmable controller CPU is being monitored using GX Works2

Scan time displayed on GX Works2 is the maximum scan time of the monitor target programmable controller CPU. To check current scan time, monitor the data in... More Details >>

Comparison result of the CMP instruction

A comparison result is held even after the command input turns off. The remaining comparison result can be cleared by using the RST or ZRST instruction. More Details >>

Limitation on the number of levels of cascade connections when QJ71E71-100 is used

If a repeater hub is used, 10BASE-T allows a maximum of four levels of cascade connections and 100BASE-TX allows a maximum of two levels of cascade connectio... More Details >>

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 >>

Difference between CC-Link reserved stations and invalid stations

- Reserved station Reserved stations are not actually connected to the network (but will be connected in the future) but do not appear as data link error... More Details >>

Duplicated coil errors that can be checked with GX Works2

When an SET instruction and RST instruction use a single device, no duplicated coil error is detected. 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 >>