How to read comments in the standard ROM with GX Works2

Select [Target Memory] -> [Standard ROM] in the Read from PLC window. 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 >>

Q series device data held in the case of a power failure

The data in the devices assigned to Latch (1) or Latch (2) in the "Device Setting" window ([PLC Parameter] -> [Device Setting] window) is held when a pow... More Details >>

Sample comment of GX Works2

It includes sample comments for special relay/special register and the intelligent function module. On the menu of GX Works2, select [Edit] -> [Import ... More Details >>

Using the automatic communication function and dedicated instructions at the same time in MODBUS (R) interface module (QJ71MB91)

The automatic communication function and dedicated instructions (MBRW instruction and MBREQ instruction) can be used on the same channel. However, when the... More Details >>

How to display the parameter setting window for a programmable controller with GX Works3

You can display the setting window from a module configuration diagram or system parameters. <Displaying the setting window from a module configuration... More Details >>

Setting the MELSEC iQ-R series inter-module synchronization function

Set modules in a module configuration diagram with GX Works3 and configure the inter-module synchronization setting. [Navigation Window]-> [Parameter]-... More Details >>

IP filter function of MELSEC iQ-R series CPU modules

You can set IP addresses accessible to the CPU module and prevent unauthorized access to the CPU module. <Setting the IP filter function> [Navigati... More Details >>

Using Q series terminal blocks and connectors with MELSEC iQ-R series modules

You can use a Q series 18-point screw terminal block with a MELSEC iQ-R series terminal block type I/O module or analog module. For a 40-pin connector type ... More Details >>

The number of times to insert and remove the extended SRAM cassette and SD memory card of a MELSEC iQ-R series CPU module

You can insert and remove the extended SRAM cassette less than 50 times and the SD memory card less than 500 times. More Details >>