A-B 1756-IB16 Digital Input Module

Allen-Bradley 1756-IB16 Digital Input Module (ControlLogix)

 

 

The Allen-Bradley 1756-IB16 is a 16-point DC digital input module for the ControlLogix platform. It is used to receive ON/OFF signals from field devices such as proximity sensors, limit switches, pushbuttons, and auxiliary contacts, and transmit those signals to the PLC for processing.

Key Specifications

• Model: 1756-IB16
• Brand: Allen-Bradley (Rockwell Automation)
• Series: ControlLogix 1756
• Product Type: Digital Input Module
• Input Channels: 16 points
• Input Voltage:
  • 10–31.2 VDC
  • Nominal 12/24 VDC
• Input Type:
  • Current sinking DC input
• Isolation:
  • 250V continuous isolation (input groups to backplane)
• Mounting:
  • ControlLogix chassis
• Compatible RTB:
  • 1756-TBNH
  • 1756-TBSH
  • 1756-TBCH
  • 1756-TBS6H

What it does (simple explanation)

Pushbutton / Sensor / Limit Switch
↓
1756-IB16 Input Module
↓
ControlLogix CPU
↓
Machine Control Logic

The module monitors the status of field devices and converts electrical input signals into digital data that can be used by the PLC program.

Main Functions

• Reads digital ON/OFF signals
• Monitors machine status and feedback
• Interfaces with sensors and switches
• Provides real-time input data to the PLC
• Supports configurable input filtering
• Includes module and channel diagnostics

Key Features

• 16 digital input channels
• 12/24V DC industrial input compatibility
• Fast response time
• User-configurable input filter settings
• LED indicators for channel status
• Removal and insertion under power (RIUP)
• Electronic keying to prevent configuration errors

Applications

• Factory automation systems
• Packaging machinery
• Conveyor systems
• Material handling equipment
• Process control applications
• Production line monitoring
• Machine status feedback systems