Allen-Bradley 1756-SYNCH SynchLink Interface Unit

The Allen-Bradley 1756-SYNCH SynchLink Interface Unit is a ControlLogix synchronization module that plugs into a 1756 backplane, linking a ControlLogix chassis to a SynchLink network and enabling cross-chassis time propagation. It can consume an Axis tag from the controller and pass that timing or event data over SynchLink to remote chassis, supporting distributed timing and coordinated actions across multiple racks. The module operates at a SynchLink data rate of 5 Mbps with a 50 microsecond frame period, delivering high-speed, deterministic timing signals for synchronized control and timestamped event capture. This makes it suitable for applications requiring Coordinated System Time (CST) distribution, precise time stamping for data logging, and tightly coupled operations across ControlLogix processors and I/O modules, all managed through Rockwell Automation software such as Studio 5000/RSLogix for configuration and ongoing monitoring.