Schneider Electric Modicon M221 / Industrial PLC controller / TM221M16T

Selection specifications follow the official Modicon M221 document. Match hardware revision and application conditions before ordering.

Manufacturer part number: TM221M16T
Brand: Schneider Electric
Category: PLC and HMI
Catalog status: Request a quotation

Technical specifications

Controller family: Modicon M221
Digital inputs: 8
Digital outputs: 8
Output type: Source (PNP) transistor
Analog inputs: 2
Analog input modes: 0-10 VDC; 10-bit
Supply voltage: 24 VDC
Termination: Removable screw terminals
RAM: 512 KB total: 256 KB internal variables + 256 KB application/data
Fast digital inputs: 4
High-speed outputs: 2 fast outputs included in total; function-specific limits apply
Interfaces: 2 serial port; 1 USB programming port
Engineering software: EcoStruxure Machine Expert - Basic
Document pages: 24, 25, 26, 83, 256
Reviewed document edition: EIO0000003313.04

Manufacturer manual · EIO0000003313.04 · en · PDF · EIO0000003313.04 · 2025-09Manufacturer source: Schneider Electric · Model explicitly covered in family document · Covered models: TM221M16T · Checked: 2026-10-23Official manufacturer source

This sheet provides a quick technical summary. For design, installation and final selection, review the latest official manufacturer documentation and verify the complete part number.