THE PL250 PLC is the ideal frame work for users looking for flexible and distributed control in a small space and with high computing power. There are 4 analog inputs (10bit or 16bit version) for signals 0 ... 10V / 4 ... 20mA or RTD / TC, with a voltage of 10.0V for any external potential meter, and 16 additional digital inputs PNP. Four digital inputs are enabled to read 2 Encoder bidirectional (powered from terminal 5/12Volt) running simultaneously 15KHz (30Khz individually), 12 relay outputs 5A, 2 continuous output 0 ... 10V (8bit resolution), battery back - up for the retention of RAM and real-time clock function, three serial ports with Modbus RTU on RS485 standard (1 in terminal) and RS232 (2 on connector plug). The software provides ways free port Management serial ports. The development tool is designed with Ladder type blocks easy to understand that with the capabilities of traditional counting, timing and control with PID algorithms, implement positioning axes, mathematical and logical 16-bit, check bit about Word forms for the serial configuration management Slave, Master and Multimaster. The simplified wiring terminal blocks has been extracted from the AC or DC power supply that requires no external power supply with the outstanding characteristics of flexibility mentioned above, make the PL250 an ideal tool to keep the costs of production automation with medium-low number of I / O.