Schneider Electric: Modicon M251 Micro PLC with Dual Channel Comm
The Modicon M251 is compact micro PLC designed to handle more advanced machine automation as a master of communications. It has dual-channel support for Serial, Ethernet and CANopen based communications to handle both upstream and downstream communications. It’s designed to control devices such as drives, motion, remote I/O and HMIs as well as to be the master controller for multiple other PLCs. It is expandable with TM3 I/O modules to handle up to a few hundred I/O points. Programs with Machine Expert software.