Models of batteries that can be used with MELSEC iQ-R series CPU modules

You can use "Q6BAT" and "Q7BAT". You cannot use "Q8BAT". 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 >>

How to prevent unauthorized access to MELSEC iQ-R series CPU modules via a network

The MELSEC iQ-R series CPU module has "IP filter function" and "remote password function" as security functions. With the "IP filter function", you can set ... More Details >>

Database function of the MELSEC iQ-R series

You can manage tabular data including product information and production information as a database in a programmable controller. By accessing the database w... More Details >>

Digit specification for bit devices in ST language with GX Works3

For a label where digits are to be specified, set a bit type array as its data type. The following shows an example of when a global label is used. - Globa... More Details >>

Accessories of the MELSEC iQ-R series 40-pin connector type module

No connector is provided with the module. Separately prepare any of the following connectors. A6CON1: Soldering type 32-point connector (40-pin connector) A6... 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 >>

Combination of the MELSEC iQ-R series inter-module synchronization function and the fixed scan communication of the multiple CPU system function

You can synchronize the fixed scan communication cycle of the multiple CPU system function with the inter-module synchronization cycle of the inter-module s... More Details >>

I/O numbers of a MELSEC iQ-R series I/O combined module (RH42C4NT2P)

An input and output use a single I/O number. (This is the same as QH42P.) When you replace a module that uses serial I/O numbers (e.g. QX41Y41P) with this m... More Details >>

I cannot place a main base unit in a module configuration diagram with GX Works3.

You may have already placed a main base unit in the module configuration diagram. Scroll up or down in the module configuration diagram and check if a main ... More Details >>