1. Full Name & Meaning

• ASI = AS‑Interface (Actuator‑Sensor Interface): a 2‑wire industrial bus for sensors/actuators.

• Bin = Binary: refers to discrete ON/OFF signals (1/0).

• ASI‑Bin = ASi binary I/O device/channel, typically with 4 digital inputs + 4 digital outputs (4DI/4DO).

2. ASi Bus Basics

• Physical layer: Yellow flat 2‑wire cable, 30 V DC power + 167 kbps data over the same pair.

• Topology: Bus/tree/star; max 100 m without repeaters (up to 600 m with repeaters).

• Master‑slave: 1 master controls up to 62 slaves (ASi‑3: 31 slaves / 5 ms cycle; ASi‑5: 62 slaves / 10 ms cycle).

• Data frame: Each slave has 4 input bits + 4 output bits (8 bits total) → “Bin” (binary) I/O.

3. Typical ASI-Bin Devices

• Slave modules (most common)

  • IP20 (cabinet): e.g., Siemens 3RK1 200‑0AA02, 4DI/4DO, ASi‑3 standard.

  • IP65/67 (field‑mounted): e.g., Bihl+Wiedemann BWU2045, waterproof, installed near machines.

• Signal assignment

  • Input Bin (4 bits): Sensor status (e.g., 1 = active, 0 = inactive).

  • Output Bin (4 bits): Actuator control (e.g., 1 = energized, 0 = de‑energized).

4. Key Specifications (General ASI-Bin)

• Signal type: Binary (discrete), 24 V DC compatible.

• I/O count: 4DI / 4DO per slave (standard).

• Voltage: 30 V DC (bus‑powered).

• Cycle time: 5 ms (ASi‑3) / 10 ms (ASi‑5).

• Protection: IP20 (cabinet) or IP65/67 (field).

• Lifetime: ＞10,000,000 cycles (ball bearing).

5. Applications

• Conveyor systems

• Packaging machinery

• Automotive assembly lines

• Process control (valves, solenoids, limit switches)