Parameters General Product: Compact logic controller (Modicon M221 series) Model: TM221C16R Type: PLC with integrated I/O Rated supply voltage: 100…240 V AC (50/60 Hz) Supply voltage limits: 85…264 V AC Power consumption: ~31 VA without expansion, ~46 VA with max I/O expansion Mounting: DIN rail (TH35) or panel with fixing kit Protection rating: IP20 Dimensions: ~95 mm (W) × 70 mm (D) × 90 mm (H) Weight: ~0.346 kg Input / Output Total I/O points: 16 Digital inputs: 9 (IEC 61131-2 Type 1) Includes 4 high-speed counter (HSC) capable inputs @ up to 100 kHz (from controller family capabilities) Digital outputs: 7 relay, normally open Output voltage: 5…125 V DC or 5…250 V AC Output current: up to 2 A per output Analog inputs: 2 (0…10 V, 10-bit resolution) Communication USB: Mini-B programming port (EcoStruxure Machine Expert – Basic) Serial link: Non-isolated (RS232 / RS485) with Modbus RTU/ASCII and SoMachine-Network support Expansion: Supports up to 4 local I/O modules or up to 11 remote I/O via extension architecture Performance & Memory User application / data RAM: ~256 kB Program memory: ~256 kB built-in Optional SD card support: up to 2 GB for backup and extended storage Execution time: Boolean instructions ~0.2 ms per 1 K (approx., typical M221 performance) Environmental Operating temperature: -10…55 °C (horizontal installation); -10…35 °C (vertical) Storage temperature: -25…70 °C Typical Applications Compact automation and machine control tasks. Conveyor and packaging equipment logic. Systems requiring distributed I/O and modular expansion.