Model Interpretation

AS: Modicon Automation System

B846: Analog multiplexer module

002: Current input type (001 = voltage input)

Technical Parameters

Inputs: 16 channels, current, isolated per channel

Output: 1 multiplexed analog output

Current Range: 4–20mA

Input Impedance: 250Ω

Response Time: 3ms

Backplane Power: +5V 65mA; +4.3V 1mA; no -5V used

Isolation: Channel‑to‑channel & channel‑to‑backplane isolated

Switching Type: Break‑before‑make

Operating Temp: 0°C to +60°C

Storage Temp: ‑40°C to +85°C

Weight: ≈1.16kg (2.55lbs)

Dimensions: 50×119×125mm

Origin: France

Interface & Configuration

Backplane: Modicon 800/984 I/O bus

Terminals: Screw terminals (16 current inputs, common)

Indicators: Power LED

Fusing: One fuse per group

Wiring: 0.5–2.5mm² copper wires

Terminal Connector: AS‑8535‑000

Core Functions

16‑to‑1 Multiplexing: Reduces I/O bus load by time‑division multiplexing

Isolated Current Inputs: Each channel fully isolated, reducing noise and crosstalk

250Ω Impedance: Matches standard 4–20mA transmitters

Fast Response: 3ms settling time for rapid data acquisition

Applications

Systems: Modicon 800, 984, 300‑series PLCs

Industries: Material handling, packaging, textile machinery, general automation

Use Cases: 4–20mA pressure/temperature/level transmitters, flow sensors, analog process signals

Compatibility

Racks: Modicon 800/984 8/11‑slot backplanes

CPUs: AS‑984B‑128, PC‑E984‑685, AS‑9370‑001

Software: Concept, ProWORX 32, P190