The TM258LD42DT serves as a compact programmable logic controller within Schneider’s Modicon M258 lineup. This unit measures roughly 8.3 inches long, 3.0 inches wide, and 3.5 inches high. Moreover, it weighs about 1.8 pounds, which suits space-limited control cabinets. Engineers choose the TM258LD42DT when they need fast embedded I/O with Ethernet-based communication.
Technical Specifications and Interface Details
The controller integrates 42 embedded I/O points directly on its front face. Specifically, it offers 24 discrete inputs and 18 discrete outputs at 24 VDC. Additionally, dual Ethernet ports support daisy-chain networking and RSTP redundancy. The processor executes applications built in SoMachine or EcoStruxure software.
| Parameter | Specification |
|---|---|
| Module Type | Programmable Logic Controller |
| Embedded I/O | 42 points (24 DI, 18 DO) |
| Output Type | Transistor, 24 VDC |
| Dimensions | 8.3 x 3.0 x 3.5 in |
| Weight | ~1.8 lbs |
| Interfaces | Dual Ethernet, serial, USB |
| Software | SoMachine, EcoStruxure |
| Mounting | DIN rail or panel |
Energy Storage and Program Retention
Internal capacitors on the TM258LD42DT provide local energy storage for stable logic voltage. Consequently, the controller rides through brief supply dips without losing execution state. A backup battery preserves application code and retained variables during longer outages. This combination therefore protects critical sequences in continuous processes.
Installation and Compatibility Notes
Because the TM258LD42DT snaps onto standard DIN rail, technicians complete mounting in minutes. They should confirm grounding before they connect field wiring to the terminals. Furthermore, the controller accepts expansion modules for added I/O capacity. Always store spare units in anti-static packaging to protect sensitive electronics.
Details
| Weight | 0.15 kg |
|---|---|
| Dimensions | 110 × 72 × 38 mm |
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