Allen-Bradley 1756-OG16 ControlLogix 16 Point TTL Digital Output Module

Description

The Allen-Bradley 1756-OG16 is a ControlLogix digital output module designed to provide 16 distinct points of 5V DC TTL outputs. Operating on a Low True logic structure, this module allows seamless interfacing with TTL-compatible field devices and logic circuits within industrial automation environments. It integrates into the ControlLogix chassis, using Producer/Consumer technology to efficiently share output status and module health diagnostics with multiple controllers across the local network architecture.

Features

• 16 digital output channels organized into two isolated groups of 8 points.
• Low True logic operation suitable for 0 to 5V DC TTL applications.
• Support for electronic keying via software configuration to prevent incorrect slot placement.
• Front-panel status indicators providing clear visual diagnostics for each I/O point and overall module status.

Applications

• High-speed semiconductor manufacturing equipment interfaces
• Laboratory automation and testing environments
• Integration with custom logic circuits and electronic control panels requiring 5V TTL signaling
• Low-power digital signaling and discrete state control

Technical Specifications

Installation Guidelines

• Ensure the ControlLogix chassis power is managed properly; while the module supports Removal and Insertion Under Power (RIUP), adhering to local plant safety guidelines is recommended.
• Align the circuit board of the module with the top and bottom chassis card guides, sliding it smoothly into the slot until the locking tabs snap firmly into position.
• Wire the field connections using a compatible 20-pin Removable Terminal Block (RTB), ensuring correct pin definitions for the low-voltage TTL lines.
• Route the low-voltage TTL signal wires away from high-voltage AC lines to mitigate potential EMI/RFI interference.
• Implement proper grounding practices for the chassis to maintain signal integrity and system protection.