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 >>

Whether or not totem pole output type encoders are connected

Totem pole output encoders cannot be connected to QD62.The following types of encoders can be connected.- Open collector output type encoders- CMOS level vol... More Details >>

Returning to the overwrite mode in GX Developer

Press the INSERT key. More Details >>

Reading and writing bits/words using the FL-net (OPCN-2) interface module

The parameters and auto refresh settings for the FL-net (OPCN-2) interface module cannot be made using the Network Parameter items in GX Developer.Set those ... More Details >>

Life expectancy of the CompactFlash card used in the high speed data logger module

The life expectancy is determined by the following calculation.Life expectancy (year) = Total writable size (GB) / 1 year write size (GB/year)For more detail... More Details >>

How to write to file registers in Q series

Specify the file in the Write to PLC window and execute writing. More Details >>

How to turn OFF the "COM.ERR" LED of the Ethernet module

The LED can be turned OFF by operations from GX Developer. The operation method is as follows.(1) Connect to the CPU in the standby system in Transfer Setup.... More Details >>

Reading file registers in the standard RAM

Set Target Memory to "Standard RAM" in the Read from PLC window to select a file register file. More Details >>

Specification method of high-speed timer

To use a high-speed timer, insert a circuit of application instruction such as "OUTH T0 K100". More Details >>

Local devices

Local devices are devices which can be independently used for each program.When multiple independent programs are executed, using local devices allows progra... More Details >>