
SIEMENS PLC logo 8
Technical Specifications
Component Description
SIEMENS LOGO! 8 PLC – Compact Control Powerhouse
The Siemens LOGO! 8 is a miniature, all‑in‑one programmable logic controller designed for straightforward automation in small to medium‑sized applications. With its integrated 8‑channel digital I/O, 4 analog inputs, and 2 analog outputs, it delivers a versatile, turnkey solution for tasks ranging from process monitoring to motor control. The controller is programmed through the LOGO! Soft Comfort environment, which supports ladder logic, function block diagrams, and structured text, enabling engineers to create complex logic without extensive training. Its rugged design, IP20 protection, and wide operating temperature range make it ideal for factory floors, HVAC systems, and building automation.
- Key Spec 1: 8 × digital inputs (0–250 V, 30 mA) & 8 × digital outputs (0–250 V, 50 mA) with 200 Ω protection
- Key Spec 2: 4 × analog inputs (0–10 V) & 2 × analog outputs (DAC) with 12‑bit resolution
- Key Spec 3: Built‑in Ethernet/PROFINET interface, RS‑232, and high‑level communication protocols (PROFIBUS DP, Modbus TCP)
- Common Use Case: Precise control of a conveyor system or automated feedstock handling in a small production line
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