Battery replacement for High-Performance model QCPU

The contents of the program memory, the standard RAM, and latch devices are not erased if the battery replacement is completed within three minutes, which is... 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 >>

Difference between Q24DHCCPU-V and Q12DCCPU-V

Hardware specifications are different. For hardware specifications, refer to the following manuals. - MELSEC-Q C Controller Module User's Manual - C Contro... More Details >>

Ladder programs for GX Configurator-FL

When GX Configurator-FL is used, programs for initial settings and cyclic data reading and writing are not needed. More Details >>

Ethernet communication after the replacement of an external device

Personal computers have different MAC addresses and an Ethernet module hold a MAC address. Hence the MAC address that the Ethernet module currently holds is ... More Details >>

Use of an A-compatible 1E frame for the built-in Ethernet port of the built-in Ethernet port QCPU

Check the serial number of the built-in Ethernet port QCPU in use. The Built-in Ethernet port QCPU modules with serial numbers with upper 5 digits of "13102"... More Details >>

NTP compatibility of the SNTP function of a built-in Ethernet port QCPU

Because NTP is compatible with SNTP, you can use an NTP server for the time setting. More Details >>

The number of LCPU extension blocks

(1) The number of modules to be connected- Main block: up to 10 modules- Extension block: up to 11 modules(2) The number of extension blocks- L02CPU, L02CPU-... More Details >>

Behavior of sequence program in event of momentary power failure in LCPU

(1) When it happened no longer than the allowable momentary power failure time. The module records an error log and suspends the operation processing. Ho... More Details >>

Open setting of LCPU

No. It is necessary to configure one port to use the MELSOFT connection. More Details >>