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Allen-Bradley 1756-SYNCH SER.A Communications Module
1. General Description
The Allen-Bradley 1756-SYNCH SER. A Communications Module is part of the ControlLogix family. People also call it the Allen-Bradley 1756-SYNCH ControlLogix SynchLink Communication Module.
This module is a key component of Rockwell Automation. Engineers designed this SynchLink communications module for ControlLogix systems to provide high-speed synchronization and communication between multiple chassis across an automation network.
As a ControlLogix SynchLink communication module, the Allen-Bradley 1756-SYNCH SER A enables deterministic data transfer and precise timing coordination across distributed systems. Ideal for applications requiring synchronized motion control, Coordinated System Time (CST) alignment, and real-time data exchange between multiple ControlLogix controllers.
The Allen-Bradley 1756-SYNCH SER. A SynchLink Communications Module provides accurate synchronization in manufacturing and robotics. It offers high performance, low latency, and outstanding reliability for important automation tasks.
2. Technical Specifications
l Product Name: Allen-Bradley 1756-SYNCH SER A SynchLink Communication Module
l Manufacturer: Rockwell Automation / Allen-Bradley
l Data Rate: 5 Mbps
l Operating Wavelength: 650 nm (fiber optic)
l Communication Interface: Fiber optic ports for high-speed data transfer
l Power Requirements:
l 1.2 Amp at 5.1 VDC
l 3 mA at 24 VDC
l Operating Temperature Range: 0 °C to 60 °C (32 °F to 140 °F)
l Storage Temperature Range: −40 °C to 85 °C (−40 °F to 185 °F)
l Isolation Voltage: 500 V continuous
l Form Factor: Single-slot standard ControlLogix module width
3. Detailed Features of the allen bradley 1756-synch controllogix synchlink communication module ser a
l Fiber Optic Communication:
l Utilizes fiber optics for noise immunity and long-distance high-speed data transfer, ideal for electrically noisy industrial environments.
l 1756 Time Synchronization:
l Provides precise timing coordination across distributed systems to ensure synchronized operation of multiple axes and processes.
l CST Synchronization:
l Supports accurate synchronization of Coordinated System Time (CST) to timestamp I/O events across multiple ControlLogix chassis.
l Multiple Data Types:
l Seamlessly transmits motion commands, drive references, control signals, and system data across networks.
l Status Indicators:
l Equipped with front-panel LED indicators that display link status, communication health, and module diagnostics for easy troubleshooting.
l Seamless ControlLogix Integration:
l The module is fully compatible with ControlLogix controllers, ensuring smooth integration into both new and existing systems.
4. Applications
The Allen-Bradley 1756-SYNCH SynchLink Module ControlLogix is suited for applications requiring high-speed synchronization, deterministic communication, and distributed coordination, such as:
A. Automated Manufacturing Systems:
Coordinates robotic cells, conveyors, and automated machinery to operate in precise sequence.
B. Motion Control Applications:
Synchronizes multiple motion axes for coordinated movements and timing accuracy using 1756 time sync capabilities.
C. Process Automation:
Ensures timing precision across batch, continuous, and discrete process industries, including pharmaceuticals, food and beverage, and chemical production.
D. Data Acquisition and Control:
Provides accurate timestamping and synchronization of sensor data across multiple chassis for reliable data logging and control consistency.
5. Installation of the 1756-SYNCH
Preparation
l Disconnect all power sources before installation.
l Gather necessary tools, including screwdrivers and fiber-optic cable management accessories.
Mounting the Module
l Insert the Allen-Bradley 1756-SYNCH SER.A SynchLink Communications Module into an available slot in the ControlLogix chassis.
l Align the module with the backplane connector and press firmly until it locks into place.
Connecting Fiber Optic Cables
l Use compatible fiber optic cables rated for 650 nm wavelength communication.
l Maintain proper cable bend radius and routing to preserve signal integrity.
Final Checks and Power-Up
l Verify all connections and inspect for secure seating.
l Restore power and run communication diagnostics via Studio 5000 or RSLogix 5000 software.
l Confirm that the status LEDs indicate active, healthy communication.
6. Related Part Numbers
l 1756-SYNCH/B: Updated version of the SynchLink Communications Module featuring enhanced performance and diagnostics.
l 1756-CN2: Standard ControlNet communication module for ControlLogix networks.
l 1756-DNB: DeviceNet bridge module for networked device integration.
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