The TM221ME16R is a compact logic controller from the Schneider Electric Modicon M221 series. It features a 24 V DC supply, 8 digital inputs, 8 relay outputs, and integrated Ethernet, serial (RS232/RS485), and USB communication ports.
Key Parameters
▶️ General
Product: Logic controller, Modicon M221 series
Model: TM221ME16R
Supply Voltage: 24 V DC (rated), operating 20.4…28.8 V DC
Mounting: DIN rail
Protection: IP20 (with protective cover)
▶️ Inputs / Outputs
Digital Inputs: 8 (IEC 61131-2 Type 1, 24 V DC)
Analog Inputs: 2 (0…10 V)
Discrete Outputs: 8 relay, normally open
Output Voltage Range: 5…125 V DC / 5…250 V AC
Output Current: Max 2 A per output
Total I/O Count: 16 local I/O
▶️ Performance
Execution Time: ~0.3 ms per 1 K instruction (event/periodic)
Analog Resolution: 10-bit (10 mV LSB)
Realtime Clock: Built-in with battery backup (BR2032)
▶️ Memory
User Application/Data RAM: 256 kB
Internal Variable RAM: 256 kB
Flash Memory: 256 kB for backup
Optional SD Card: Supports up to 2 GB
▶️ Communication
Ethernet: RJ45, supports Modbus TCP and other protocols
Serial Link: RS232/RS485 with Modbus RTU/ASCII or SoMachine-Network
USB: Mini-B port for programming
▶️ Environmental
Operating Temp: ~0 °C to 55 °C
Weight & Dim: ~0.35 kg; ~138×90×70 mm
▶️ Expansion
Up to 7 local or 14 remote I/O expansion modules supported