Description

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📌 Product Overview

The Allen‑Bradley 1756HP‑TIME/B is a time synchronization module designed for use in ControlLogix PLC systems. It serves as a precision time source and synchronization engine across a ControlLogix rack and network, ensuring coordinated time‑stamping and time accuracy throughout your automation system.

This module is particularly valuable in applications where accurate event sequencing, timestamping of data, and deterministic timing across distributed controllers are required — for example, in data logging, sequence of events (SOE) capture, synchronized control logic, and coordinated multi‑controller systems.

 

🧠 Key Features

Time Synchronization:
Acts as a high‑precision time master within the ControlLogix system, distributing time to other modules and networked controllers.

Protocol Support:
Supports modern timing protocols including Precision Time Protocol (PTP, IEEE 1588) and Simple Network Time Protocol (SNTP) over Ethernet/IP networks.

Ethernet/IP Communication:
Uses Ethernet/IP as a backbone for time distribution across the system.

Accurate Event Timestamping:
Enables precise timestamps for sequence‑of‑events (SOE), alarms, and historical data logging without requiring extra logic in ladder programs.

Seamless Integration:
Works with RSLogix and Studio 5000 Logix Designer for configuration and diagnostics using Add‑On Profiles (AOPs) or UDTs, depending on firmware version.

Compatible with Modern ControlLogix Systems:
Fits in any ControlLogix chassis that supports specialty modules and is compatible with other 1756 series modules.

⚙️ Typical Specifications
Attribute Description
Brand Allen‑Bradley (Rockwell Automation)
Series ControlLogix
Module Type Time Synchronization (Precision Time Protocol / Time Source)
Communication Ethernet/IP compatible
Protocols Supported IEEE 1588 PTP, SNTP
Function Distribute and synchronize time across system modules
Dimensions Compact, 1‑slot wide module (fits standard 1756 chassis)
Configuration Tools Studio 5000 Logix Designer / RSLogix (Add‑On Profiles or UDTs)
(General based on typical ControlLogix timing modules, specific datasheet may vary)

🛠️ Applications

The 1756HP‑TIME/B module is suited to applications where precise time coordination is critical, such as:

Sequence‑of‑Events (SOE) Logging — Accurate timestamping of system events and disturbances

Distributed Control Systems — Horizontal and vertical time coordination across multiple racks or controllers

Data Analytics & Historian Integration — Ensuring consistent timestamps for data across systems

Process Control with Time‑Sensitive Logic — Multi‑controller coordinated execution based on synchronized time

Accurate system time reduces inconsistencies in logged data and simplifies troubleshooting, diagnostics, and compliance reporting in industrial environments.

🧠 How It Fits in the System

This module is installed in a ControlLogix chassis alongside other I/O and specialty modules. Once configured, it becomes the time master for the rack and network, feeding synchronized timing information to capsule modules and distributed systems. This enhances:

Clock consistency across controllers

Deterministic system timing for synchronized operations

High‑accuracy time for event sequence logging