Difference between SM0 and SM1

SM0 turns ON when self-diagnostic checks detect an error or when an annunciator turns ON.SM1 turns ON when self-diagnostic checks detect an error. More Details >>

GX Configurator-MB for the MODBUS(R) interface module

GX Configurator-MB does not need to be purchased. Parameters can be set using GX Works2 alone. More Details >>

Fixed scan execution type (program setting item)

A fixed scan execution type program is a program executed at specified time intervals. This type of programs, unlike interrupt programs, can be interrupted i... More Details >>

Regarding use of the FTP Server Auto Transfer Function with Other Functions

Be careful when using the FTP server auto transfer function in combination with the following functions. ・FTP client (FTPPUT instruction) 　The function exe... More Details >>

Unable to communicate via USB connection

Check the following points.(1) Transfer Setup is properly configured.(2) The USB driver is properly recognized. More Details >>

How to check the version of the MELSEC-F series

To check the version of the MELSEC-F series, connect GX Works2 (personal computer) or HPP to a programmable controller, and monitor the data in D8001. The l... More Details >>

How to clear errors

Follow the procedure below.(1)Eliminate the error cause.(2) Store the error code to be cleared in SD50.(3)Turn OFF and ON SM50.(4) The error is cleared. More Details >>

I/O structure error in the MELSEC-F

When an unimplemented input (X) or output (Y) number is used in a program, M8060 turns on. The first to third digits of the numericalvalue stored in D8060 i... More Details >>

How to check the scan time (MELSEC-F series)

The present scan time is stored in D8010. Monitor the valueusing a programming tool such as GX Works2 and GX Developer. More Details >>

GX Works2's compatibility with Monitor (write mode)

From version 1.62Q, GX Works2 supports Monitor (write mode). Pressing Shift+F4 allows an online change. More Details >>