Technical Specifications (Parameters) Parameter Description / Value Product Range Modicon M221 Product Type Logic controller Discrete I/O Number 32 total Discrete Inputs 16 total (4 fast inputs, Type 1 IEC 61131-2) Discrete Input Logic Sink or source (positive/negative) Discrete Input Voltage 24 V DC Discrete Input Current 7 mA (discrete input), 5 mA (fast input) Discrete Outputs 16 transistor (2 fast outputs), PNP/source logic Discrete Output Voltage 24 V DC Discrete Output Current 0.1 A per output Maximum Current per Output Common 1.6 A Analog Inputs 2 (0...10 V DC) Analog Input Resolution 10 bits Rated Supply Voltage [Us] 24 V DC Supply Voltage Limits 20.4...28.8 V DC Maximum Power Consumption 4.2 W (without I/O modules), 23.2 W (with max expansion) Memory Capacity 256 kB user application/data RAM, 256 kB internal variables RAM, 256 kB built-in flash backup Data Storage 2 GB SD card (optional) Execution Time (Boolean) 0.2 µs per instruction Real-Time Clock Yes (battery backup: 1 year at 25°C) Motion Functions PTO 2 axes (pulse/direction, 100 kHz), PTO 1 axis (CW/CCW, 100 kHz), PWM, PLS High-Speed Counters 4 fast inputs (HSC mode) at 100 kHz, 32 bits PID Loops Up to 14 simultaneous adjustable PID regulators Communication Ports • USB Mini-B 2.0 (programming) • Non-isolated serial link: RJ45 (RS232/RS485), Modbus RTU/ASCII • Ethernet: RJ45 (10BASE-T/100BASE-TX), Modbus TCP/IP I/O Expansion Up to 7 local modules, up to 14 remote modules Local Signaling LEDs for PWR, RUN, ERR, SD, BAT, I/O status, SL, ACT, Link Degree of Protection IP20 (with protective cover) Operating Temperature -10...55 °C (horizontal), -10...35 °C (vertical) Dimensions (W x H x D) 70 mm x 90 mm x 70 mm Net Weight 0.27 kg Mounting Support DIN rail (TH35-15/TH35-7.5) or panel mounting Product Certifications CE, UL, CSA, cULus, RCM, EAC, LR, ABS, DNV-GL, UKCA, cULus HazLoc Standards IEC 61131-2, UL 508, CSA C22.2 No. 213, IACS E10, ANSI/ISA 12-12-01