SNAP SSI (Serial Synchronous Interface) Module Features For motion control applications using linear or rotary transducers Dual, isolated serial synchronous interface (SSI) inputs Software configurable The SNAP-SCM-SSI module provides two individually isolated serial synchronous interface (SSI) inputs for acquiring data from linear or rotary transducers used in motion control. The module can decode both binary and Gray Code, and is software configurable to set clock speed, frame length, delay time between data samples, and other parameters. SNAP SSI modules mount alongside analog, digital, and other serial modules on any SNAP PAC rack with a SNAP PAC brain (EB or SB) or R-series controller. The brain or controller processes the data from the module and can communicate the data to other parts of an Opto 22 SNAP PAC SystemTM or to another system (such as a Modbus(R) system or an OPC client). SNAP PAC racks accommodate up to 4, 8, 12, or 16 I/O modules, with a maximum of 8 serial modules (including SSI modules) on any one rack. Because the SNAP-SCM-SSI module is mounted on these standard racks with other SNAP I/O modules, you can use the combination of analog, digital, and serial modules required by your application at the location where they are needed. How the SNAP-SCM-SSI Samples Data The SSI module outputs a high clock signal during idle, and it samples SSI data on falling edges of the clock, starting after the first rising edge. See the following diagram. Example of data sample with out-of-range error bit Idle (inter-frame delay) Clock cycle (frame length) 1 2 3 4 n-1 n +Clock MS +Data First sample LS Error Second sample Last sample NOTE: SSI modules require a SNAP PAC brain (either EB or SB) or R-series controller with firmware version 8.5c or newer. These modules do not work with legacy brains or controllers. Configuration You use PAC Manager, a free software utility, to configure the SNAP-SCM-SSI. PAC Manager 9.0 or newer is required. SNAP SSI (Serial Synchronous Interface) Module SNAP SSI Module Description PAC Manager comes on a CD with every SNAP PAC brain and controller and is also available for download from the Support section of our website, www.opto22.com. Part SNAP-SCM-SSI Description SNAP 2-Channel Serial Synchronous Interface Module Opto 22 * 43044 Business Park Drive * Temecula, CA 92590-3614 * www.opto22.com SALES 800-321-6786 * 951-695-3000 * FAX 951-695-3095 * sales@opto22.com * SUPPORT 800-835-6786 * 951-695-3080 * FAX 951-695-3017 * support@opto22.com (c) 2011-2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations. DATA SHEET Part Numbers Form 1919-150216 To install, configure, and use the SNAP-SCM-SSI, see form #1931, the SNAP SSI (Serial Synchronous Interface) Module User's Guide, available on our website. PAGE 1 SNAP SSI (Serial Synchronous Interface) Module SNAP SSI (Serial Synchronous Interface) Module Specifications Maximum SSI clock frequency 2.5 MHz Channel-to-channel isolation 1500 VAC Logic supply voltage 5.0 VDC Logic supply current 200 mA DC Compatible I/O processors SNAP PAC R-series controllers and SNAP PAC EB or SB brains with firmware 8.5c or newer Number of ports per module 2 Max. number of modules per rack 8 Max. data resolution 24 bits Maximum cable length 500 feet at 200kHz using twisted-pair, 24-gauge shielded cable with an additional pair for common (three pairs total) Operating temperature -20 to 60 C Storage temperature -30 to 85 C Torque, hold-down screws 4 in-lb (0.45 N-m) Torque, connector screws 5.26 in-lb (0.6 N-m) Agency approvals CE, RoHS, DFARS Warranty 30 months from date of manufacture Pins for Each Port Pin Use 1 Clock + 2 Clock - 3 Data - 4 Data + 5 Excitation common See diagram on page 3 for location of pin 1. Use twisted-pair, 24-gauge shielded cable with an additional pair for common (three pairs total). DATA SHEET Form 1919-150216 For complete installation information, see form #1931, the SNAP SSI (Serial Synchronous Interface) Module User's Guide, available on our website. PAGE 2 Opto 22 * 43044 Business Park Drive * Temecula, CA 92590-3614 * www.opto22.com SALES 800-321-6786 * 951-695-3000 * FAX 951-695-3095 * sales@opto22.com * SUPPORT 800-835-6786 * 951-695-3080 * FAX 951-695-3017 * support@opto22.com (c) 2011-2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations. SNAP SSI (Serial Synchronous Interface) Module Dimensions SNAP-SCM-SSI Serial Synchronous Interface Module SNAP SSI (Serial Synchronous Interface) Module Pin 1 Pin 1 Form 1919-150216 DATA SHEET Opto 22 * 43044 Business Park Drive * Temecula, CA 92590-3614 * www.opto22.com SALES 800-321-6786 * 951-695-3000 * FAX 951-695-3095 * sales@opto22.com * SUPPORT 800-835-6786 * 951-695-3080 * FAX 951-695-3017 * support@opto22.com (c) 2011-2015 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations. PAGE 3 More About Opto 22 Products Opto 22 develops and manufactures reliable, flexible, easy-to-use hardware and software products for industrial automation, energy management, remote monitoring, and data acquisition applications. groov groov puts your system on your mobile device. With zero programming, you can build mobile operator interfaces to monitor and control systems from Allen-Bradley, Siemens, Schneider Electric, Modicon, and many more. Web-based groov puts mobile-ready gadgets at your fingertips. Tag them from your existing tag database, and they automatically scale for use on any device with a modern web browser. See groov.com for more information and your free trial. SNAP PAC System Designed to simplify the typically complex process of selecting and applying an automation system, the SNAP PAC System consists of four integrated components: * SNAP PAC controllers * PAC ProjectTM Software Suite * SNAP PAC brains * SNAP I/OTM SNAP PAC Controllers Programmable automation controllers (PACs) are multifunctional, modular controllers based on open standards. Opto 22 has been manufacturing PACs for over two decades. The standalone SNAP PAC S-series, the rack-mounted SNAP PAC Rseries, and the software-based SoftPACTM all handle a wide range of digital, analog, and serial functions for data collection, remote monitoring, process control, and discrete and hybrid manufacturing. SNAP PACs are based on open Ethernet and Internet Protocol (IP) standards, so you can build or extend a system easily, without the expense and limitations of proprietary networks and protocols. Wired+WirelessTM models are also available. PAC Project Software Suite Opto 22's PAC Project Software Suite provides full-featured, costeffective control programming, HMI (human machine interface) development and runtime, OPC server, and database connectivity software for your SNAP PAC System. Control programming includes both easy-to-learn flowcharts and optional scripting. Commands are in plain English; variables and I/ O point names are fully descriptive. PAC Project Basic offers control and HMI tools and is free for download on our website, www.opto22.com. PAC Project Professional, available for separate purchase, adds one SoftPAC, OptoOPCServer, OptoDataLink, options for controller redundancy or segmented networking, and support for legacy Opto 22 serial misticTM I/O units. SNAP PAC Brains While SNAP PAC controllers provide central control and data distribution, SNAP PAC brains provide distributed intelligence for I/O processing and communications. Brains offer analog, digital, and serial functions, including thermocouple linearization; PID loop control; and optional high-speed digital counting (up to 20 kHz), quadrature counting, TPO, and pulse generation and measurement. SNAP I/O I/O provides the local connection to sensors and equipment. Opto 22 SNAP I/O offers 1 to 32 points of reliable I/O per module, depending on the type of module and your needs. Analog, digital, and serial modules are all mixed on the same mounting rack and controlled by the same processor (SNAP PAC brain or rack-mounted controller). Quality Founded in 1974, Opto 22 has established a worldwide reputation for high-quality products. All are made in the U.S.A. at our manufacturing facility in Temecula, California. Because we test each product twice before it leaves our factory, rather than only testing a sample of each batch, we can guarantee most solid-state relays and optically isolated I/O modules for life. Free Product Support Opto 22's California-based Product Support Group offers free, comprehensive technical support for Opto 22 products. Our staff of support engineers represents decades of training and experience. Support is available in English and Spanish by phone or email, Monday-Friday, 7 a.m. to 5 p.m. PST. Additional support is always available on our website: how-to videos, OptoKnowledgeBase, self-training guide, troubleshooting and user's guides, and OptoForums. In addition, hands-on training is available for free at our Temecula, California headquarters, and you can register online. Purchasing Opto 22 Products Opto 22 products are sold directly and through a worldwide network of distributors, partners, and system integrators. For more information, contact Opto 22 headquarters at 800-3216786 or 951-695-3000, or visit our website at www.opto22.com. www.opto22.com www.opto22.com * Opto 22 * 43044 Business Park Drive * Temecula, CA 92590-3614 * Form 1335-131203 SALES 800-321-6786 * 951-695-3000 * FAX 951-695-3095 * sales@opto22.com * SUPPORT 800-835-6786 * 951-695-3080 * FAX 951-695-3017 * support@opto22.com (c) 2014 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.