Overview
The TM171DLED is a Schneider Modicon M171 Optimized Display LED module — a monochrome 7-segment LED display with decimal point and eight keys, designed as a local operator interface for the M171 optimized logic controller family. It draws power from an external 12 V DC supply, consumes 5 W, and is rated IP20 for in-cabinet mounting. This part was discontinued by Schneider as of 2024-12-01.
The TM171DLED serves as a local HMI for the Modicon M171 optimized controller, providing a 7-segment LED display with decimal point for numeric readouts and eight membrane keys for menu navigation, parameter entry, and machine control. The display shows values such as setpoints, counters, and alarms directly on the controller without a separate HMI panel. The eight keys allow the operator to scroll, select, and confirm actions. The module is powered externally at 12 V DC, drawing 5 W, and communicates with the controller via the M171 backplane — no separate programming is required beyond the controller's logic.
Applications
This display module is used on Modicon M171 optimized logic controllers in compact machine and process automation — refrigeration units, HVAC controllers, packaging machines, and small OEM equipment where a simple numeric display and keypad suffice for operator interaction. It replaces a separate HMI panel in space-constrained panels and reduces wiring.