SCHNEIDER AS‑B865‑001 (Modicon 800/984 8‑Channel TTL Register Input Module)
June 02, 2026

SCHNEIDER AS‑B865‑001 (Modicon 800/984 8‑Channel TTL Register Input Module)

Product Description The AS‑B865‑001 is an 8‑channel 16‑bit TTL register input module for Schneider Modicon 800/984 PLC racks. It interfaces 5V TTL/CMOS peripheral devices to the PLC, reading parallel binary/BCD data from external registers, displays, or TTL sensors.

Description

Model Interpretation

AS: Modicon Automation System

B865: 8‑channel register input module

001: Standard TTL input variant

Technical Parameters

Channels: 8 × 16‑bit parallel inputs (BCD/binary)

Input Type: 5VDC TTL/CMOS‑compatible

Input Voltage: Low ≤0.8V; High ≥2.0V

Input Current: Max 20mA per channel

Backplane Power: +5V 400mA; +4.3V 600mA

Isolation: Channel‑to‑backplane 500Vrms

Response Time: ≤20ms (ON↔OFF)

Indicators: 8 LED status (1 per channel)

Operating Temp: 0°C to +60°C

Storage Temp: ‑40°C to +85°C

Dimensions: 50×119×125mm

Weight: ≈1.13kg

Origin: France/USA

Interface & Configuration

Backplane: Modicon 800/984 I/O bus

Terminals: Screw terminals (8×16‑bit, common)

Wiring: 0.5–2.5mm² copper

Terminal Connector: AS‑8535‑000

Core Functions

8‑Channel 16‑bit Input: Captures parallel BCD/binary from external registers

TTL/CMOS Compatibility: Direct interface with 5V digital logic devices

Isolated Inputs: Reduces electrical noise and crosstalk

LED Diagnostics: Real‑time channel status for quick troubleshooting

Applications

Systems: Modicon 800, 984, 300‑series PLCs

Industries: Industrial automation, manufacturing, process control

Use Cases: BCD seven‑segment displays, numeric indicators, external register modules, TTL sensor arrays

Compatibility

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

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

Software: Concept, ProWORX 32, P190


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