Schneider Electric technologies
Control & Automation / PLC & PAC Controllers
Modicon M340
A compact modular PLC that has become the workhorse of water and infrastructure installations across the region. The rack takes power supply, CPU and a mix of digital, analog and communication modules, so a station cabinet can be built exactly to the I/O count without oversizing. Programming is shared with the M580 in Control Expert, which makes a later migration to an ePAC straightforward.

Key characteristics
- Modular rack: power supply, CPU and up to 11 I/O modules
- Built-in Ethernet, Modbus serial, CANopen and USB programming port
- Digital, analog, temperature, counting and motion I/O modules
- Removable memory card for application and data storage
- Engineering in EcoStruxure Control Expert, shared libraries with M580
Typical applications
Pumping stations, reservoirs, packaged plant, mid-size process control
Manufacturer documentation