SPS control Modicon M251 with 22 ns / boolean instruction for the automation of modular, high-performance, and networked industrial machines. A switched Ethernet dual-port switch with RJ45 socket. For EtherNet/IP adapter/originator and Modbus TCP client/server, I/O scanner, UDP, TCP, SQL client, SNMP client/server V1/V2, OPC UA server, SNTP client, DNS client, as well as web server. An RS485/RS232 interface with RJ45 socket and an RS485 interface with screw terminal block for Modbus ASCII/RTU master/slave, ASCII string. A CANopen master interface. The power supply is provided via 24 VDC. 54 MB of integrated RAM and 128 MB of flash memory. Equipped with a slot for SD card, a USB mini-B port for programming, a run/stop switch, and a QR code for direct access to technical documentation. Local and decentralized I/O expansion with Modicon TM3/TM5 I/O system. Programming and configuration using EcoStruxure Machine Expert software. PLC programming according to IEC 61131-3 in the programming languages Structured Text (ST), Function Block Diagram (FBD/CFC), Instruction List (AWL), Ladder Diagram (KOP), or Sequential Function Chart (SFC) based on CODESYS V3. Operating temperature range -10 °C to +55 °C. Mounting on 35 mm DIN rail or directly on the control panel. Certified according to CE, cULus Listing Mark, C-Tick, CSA, EAC, LR, ABS, DNV-GL, ODVA, Achilles.