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Serial Synchronous Interface Module

Serial Synchronous Interface Module

The 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 accommodates 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) and time interval between data samples. 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(tm) controllers.

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