Serial synchronous interface module for motion control, position sensing applications

Opto 22 Snap-SCM-SSI serial module offers a communications interface between digital encoders and Snap PAC System I/P processors or programmable automation controllers; designed for use in motion control and other tracking and identifying applications.


The new Snap-SCM-SSI I/O module from Opto 22 offers a communications interface between digital encoders and Snap PAC System I/O processors or programmable automation controllers. The Snap-SCM-SSI I/O module provides two isolated serial synchronous inputs (SSI) for acquiring data from optical and mechanical encoders and other types of linear and rotary transducers.

Designed for use in motion control and other applications where tracking and identifying the movement and position of machinery or components is critical, the Snap-SCM-SSI connects to and accepts input from either binary or Gray code encoders, allowing the module to process and communicate position-related data from heavy duty industrial machinery and apparatus (such as floodgates, drawbridges, and rotating or elevating platforms) as well as machine tools, stepper motors, servos, and other moving or robotic components.

The Snap-SCM-SSI accomodates an SSI clock frequency of up to 2.5-MHz, functions at cable lengths up to 500-ft, and can be configured for clock frequency, data bits (i.e., encoder resolution), time interval between data samples, and more. The module can be used with both Snap PAC Ethernet (EB-series) and Snap PAC serial (SB-series) I/O processors, standard Snap PAC standalone and rack-mounted controllers, and all Snap PAC Wired+Wireless controllers.

Opto 22

- Edited by Amanda McLeman, Control Engineering,

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