Specifications Electrical & I/O Controller Type: Logic controller, Modicon M221 series Rated Supply Voltage: 24 V DC (20.4 … 28.8 V) Total I/O Points: 40 integrated points (24 digital inputs, 16 digital outputs) Digital Inputs: 24 (including 4 high‑speed inputs) conforming to IEC 61131‑2 Type 1 Digital Outputs: 16 transistor (NPN) outputs with 4 fast outputs Discrete Output Voltage: 24 V DC Discrete Output Current: ~0.5 A per output Analog Inputs: 2 (0…10 V resolution) Discrete Input Logic: Sink or source (positive/negative) Analog Input Resolution: 10 bits (≈10 mV LSB) Communication & Memory Ethernet Port: 10BASE‑T/100BASE‑TX for networking, Modbus TCP, and diagnostic access USB Port: Mini‑B USB‑2.0 for programming and connection to configuration software Serial Link: Non‑isolated RJ45 supporting RS232/RS485, Modbus RTU/ASCII, and SoMachine‑Network Memory: • 256 kB user application and data RAM • 256 kB internal variables RAM • 256 kB built‑in flash for program/data backup • Optional SD card support (up to ~2 GB) Backup Battery: BR2032 lithium, ~4 years lifetime, ~1 year data retention without power Performance & Functions Execution Time: ~0.2 µs per Boolean instruction, ~0.3 ms per 1 K instruction task Real‑Time Clock: Integrated RTC with ≤30 s/month drift at 25 °C Control Features: • PID regulator with up to 14 simultaneous loops • High‑speed counting and positioning functions with PTO at up to 100 kHz • PWM, frequency generator, and pulse/direction support Mechanical & Environmental Mounting: DIN rail (IEC 60715 TH35) or panel with accessory kit Protection Rating: IP20 (standard industrial module) Dimensions (approx.): Width 160 mm × Depth 70 mm × Height 90 mm Weight: ~0.456 kg Operating Temperature: –10 °C to +55 °C (industrial range) Standards/Certifications: EN/IEC 61131‑2, EN/IEC 61010‑2‑201, EN/IEC 60664‑1, CE, UL/cULus, CSA, EAC, DNV‑GL, ABS, RCM