Schneider adds three new Modicon PLCs to range

All versions are optimised for Ethernet communication and include a USB interface for programming, as well as a web server for integration into modern remote access and communication systems.

The controllers use an SD card to save program and firmware, making them easy to transport or switch out without the need for a PC. It is also possible to use a PC to install program and/or firmware data on the controllers, even when they are switched off.

The Modicon M221 is designed for machines automated with hardwired controller architectures and is available in both compact and standard formats. It is suitable for applications with up to mid-level performance requirements.

The basic configuration includes a serial interface and there is also an integrated pulse/direction interface for connecting servo drives fitted as standard. The standard format has 24 I/O terminals, while the book format has 16.

The Modicon M251 is specifically designed for tasks in which the controller needs to communicate simultaneously via Ethernet within the machine and at network level. With two Ethernet interfaces and an embedded Ethernet switch, it can communicate in a parallel operation through two Ethernet networks, and can act as an Ethernet master in one of them.

Both the Modicon M241 and M251 are designed for CANopen communication, boasting a wide assortment of interfaces in addition to the field bus connection. The dual-core processor has an impressive performance and allows the controller to work with a consistently short life cycle, even in large-scale communication tasks.

All controllers are based on SoMachine, the tool-based engineering suite for all the controllers of the MachineStruxure multi-controller platform. Controller programs can be created in the common languages of the IEC 61131-3 standard and can be ported between the different Modicon controllers.