Auto refresh setting in GX Configurator -MB

Auto refresh setting is for storing the buffer memory data of a MODBUS (R) interface module to specified devices of a CPU module and for storing device data ... More Details >>

Using Structured Text in GX Works2 simple projects

Select "Use Label" in the New Project window. More Details >>

Difference between FL-net interface modules QJ71FL71-T and QJ71FL71-T-F01

- QJ71FL71-T is a product which supports FL-net (OPCN-2) Version 1.00.- QJ71FL71-T-F01 is a product which supports FL-net (OPCN-2) Version 2.00.Since Version... 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 >>

Turning OFF the power with the battery error occurring

It deletes the error history. More Details >>

Device comment

Those displayed under COMMENT are common comments, and others are program comments.When there are multiple programs in a project, a common comment applies to... More Details >>

GX Developer installation procedure from the iQ Works disk

Use setup.exe in the [GXD1] folder of the installation disk to install the application. More Details >>

Behavior of special relay in simulation

The constant scan initial value in the simulation function is 100ms. Thus, the value of SM410(0.1sec. clock) is OFF in each scan. To turn ON/OFF SM410, set ... More Details >>

Overhead time before and after the startup of an interrupt program with a MELSEC iQ-R series CPU module

Although it depends on interrupt factors, the overhead time before startup becomes 10.8 to 23.8 [us] and the time after startup becomes 6.5 to 17.4 [us]. More Details >>

Inter-module synchronization function of MELSEC iQ-R series

The inter-module synchronization function synchronizes the timing to control signals of multiple modules. This function synchronizes the input or output tim... More Details >>