Insufficient memory capacity for sequence programs

It cannot be increased by installing an SRAM card. The size of executable program depends on the program memory size of the CPU. Use another CPU of which p... 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 >>

Regarding EtherCAT Communications

The FX5 CPU module does not support EtherCAT communication. There are no products in the FX series or iQ-F series that support EtherCAT communication. More Details >>

Regarding registering profiles

Launch GX Works3, select a profile and register it from Tools > Profile Management > Register. More Details >>

Security key authentication function of MELSEC iQ-R series

The security key authentication function registers a security key in a program file and prevents unauthorized execution or access to the program.You can set... More Details >>

Battery error

The following shows the devices for the battery errors. • [SM51] Battery low latch Turn ON when the voltage of battery reduces to less than 2.5[V]. Remains O... More Details >>

Regarding how to change the IP address

The IP address can be changed from a program by using the IP address change function. The IP address change function can change the IP address, subnet mask,... More Details >>

Remedy for LCPU error "4116"

The LCPU error code 4116 is displayed when a built-in I/O instruction that is disabled in the parameter setting is executed. Check for the parameter settings... More Details >>

Difference between R and ZR

File registers "R" use the block switching method. The number of file register points used are divided and specified in units of 32k points. When multiple ... More Details >>

M-code

"M-code" is outputted to turn ON/OFF machine's solenoids or relays according to the start/end of the positioning operation. The following two modes are sele... More Details >>