Schneider Electric Modicon TM2 Modules TM2DOCKN

Technical Dossier

Product Details And Specifications

Schneider Electric Modicon TM2 Series Technical Notes

The Evolution of TM2 Architecture

The TM2 series succeeded the earlier Twido and TSX Nano compact PLC I/O expansion modules, inheriting the side-bus connector philosophy while introducing a higher-density terminal block design and improved EMC shielding. Early TM2 modules (circa 2010–2014) were validated exclusively against SoMachine v3.x; subsequent firmware revisions extended compatibility to EcoStruxure Machine Expert v1.x and v2.x. The TM2DOCKN adaptor module specifically addresses the mechanical interface between TM2 I/O modules and the M221/M241 controller body, enabling lateral expansion without additional wiring harnesses. As the M221 platform entered its mature lifecycle phase (post-2020), Schneider Electric confirmed continued production of TM2 accessories including the TM2DOCKN, though end-of-life planning for select digital I/O variants has been communicated. Engineers specifying new installations should evaluate the Modicon M262 and associated TM3 I/O series as the forward migration path, while existing TM2-based systems require validated spare parts sourcing to maintain uptime commitments.

TM2 Full Catalog & Functionalities (SKU List)

Adaptor & Interface Modules

• TM2DOCKN: Side-bus adaptor module; connects TM2 I/O blocks to M221/M241 controller lateral expansion port without additional cabling.
• TM2XTRA: TM2 bus extension cable assembly; extends the TM2 expansion bus up to 1 metre for distributed panel layouts.

Digital Input Modules

• TM2DI8DT: 8-channel 24 VDC digital input module; sink/source compatible; 3.5 ms filter time.
• TM2DI16DT: 16-channel 24 VDC digital input module; standard IEC 61131-2 Type 1/3 input compliance.
• TM2DI8DRN: 8-channel 24 VDC digital input, relay output combination; 6 DI + 2 relay DO.
• TM2DDI8DT: 8-channel fast digital input module; supports high-speed counting up to 100 kHz on 2 channels.

Digital Output Modules

• TM2DO8TT: 8-channel 24 VDC transistor (source) digital output; 0.5 A per channel; short-circuit protected.
• TM2DO8RN: 8-channel relay digital output; 2 A per channel; 250 VAC / 30 VDC switching capacity.
• TM2DO16TK: 16-channel 24 VDC transistor digital output; 0.3 A per channel; compact 45 mm width.
• TM2DO8TRN: 8-channel relay output module; NO contacts; rated for 8 A resistive load per channel.

Mixed Digital I/O Modules

• TM2DDM8DRT: 8-channel mixed I/O; 4 DI (24 VDC) + 4 relay DO; general-purpose machine control.
• TM2DDM16DT: 16-channel mixed I/O; 8 DI + 8 transistor DO; 24 VDC; standard density expansion.
• TM2DDM24DT: 24-channel mixed I/O; 14 DI + 10 transistor DO; high-density panel space optimisation.

Analog I/O Modules

• TM2AMI2HT: 2-channel analog input; 0–10 V / 0–20 mA / 4–20 mA selectable; 12-bit resolution.
• TM2AMI4LT: 4-channel analog input; ±10 V / 0–20 mA; 12-bit resolution; suitable for process variable acquisition.
• TM2AMO1HT: 1-channel analog output; 0–10 V or 4–20 mA; 12-bit resolution; for valve positioner and drive reference signals.
• TM2AVO2HT: 2-channel analog voltage output; 0–10 V; 12-bit; used in proportional control loops.
• TM2ALM3LT: 3-channel thermocouple/RTD input module; supports J, K, T, B, E, S, R types and Pt100/Pt1000; 16-bit resolution.