1184_SNAP
5Pages

SNAP Serial Communication Modules Features Description The SNAP-SCM-232 and SNAP-SCM-485-422 serial communication modules are part of the SNAP PAC System. They conveniently provide two channels of serial data at a remote Ethernet location. Many applications require digital, analog, and serial data to provide a complete solution. Traditionally, either separate serial network cabling is required for the serial devices, or an expensive data processor or PC must be used just to interface with the serial devices. SNAP serial communication modules eliminate this problem by providing two channels of high-speed, isolated serial communications packaged in the compact SNAP module form. • The SNAP-SCM-232 interfaces to auxiliary serial equipment via two RJ-45 plug-in data connectors, providing two RS-232 serial ports. The module also supports optional RTS/CTS flow control. • The SNAP-SCM-485-422 uses the standard SNAP removable top-mounted connector for easy wiring of two 2-wire RS-485 ports or one 4-wire RS-485/422 port. The module has convenient top switches for termination and bias. LED indicators are provided on each module to indicate Transmit and Receive on each port. beside digital and analog modules, to provide the mix of analog, digital, and serial channels you need at any location. Typical applications include interfacing with printers, scales, chart recorders, and barcode systems. Using the SNAP-SCM232 or SNAP-SCM-485-422 as a converter, these non-Ethernet devices can be connected to an Ethernet network and be available for control, monitoring, or data acquisition by any authorized PC or other device on the network. With the SNAP-SCM-232, two short (12-inch), unshielded twisted-pair cables and two DB9 (male) adapters are included for easy connection to all types of RS-232 devices. SNAP racks use a retention rail locking system that holds modules securely to the rack. Normally, a hold-down screw is not required. However, for applications that require additional module security, each module has provisions for two 4-40 by ½-inch standard machine screws to hold each module in position on the SNAP rack. For details on using these modules, see Opto 22 form #1191, the SNAP Serial Communication Module User’s Guide. Notes for legacy hardware: These SNAP serial communication modules can also be used with SNAP Simple, SNAP Ethernet, and SNAP Ultimate brains on an M-series or Bseries rack. SNAP-SCM-232 modules offering RTS/CTS flow control were manufactured in June 2003 or more recently and require I/O processor firmware version 5.0 or newer. The SNAPSCM-485-422 also requires firmware 5.0 or newer. An older module part number, SNAP-SCM-485, supported 2-wire RS485 only. Part Numbers Part Two-channel RS-232 serial communication module Two-channel RS-485 (two-wire) or SNAP-SCM-485-422 single-channel RS-485/422 (four-wire) serial communication 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 © 2006–2015 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 Both SNAP serial communication modules work with SNAP PAC Ethernet-based brains and rack-mounted controllers, both standard wired models and Wired+Wireless™ models. (They do not work with serial-based SNAP PAC brains.) These modules snap into Opto 22 SNAP PAC mounting racks right SNAP Serial Communication Modules SNAP Serial Communication Modules SNAP-SCM-232: Two RS-232 serial ports with optional RTS/CTS flow control SNAP-SCM-485-422: Two RS-485 2-wire serial ports or one RS-485/422 4-wire serial port Individually isolated ports Baud rates to 115 K Baud Connection accessories provided Works with the SNAP PAC System Up to eight serial modules per r

SNAP Serial Communication Modules Specifications Logic supply voltage Logic supply current Number of ports per module Max. number of modules per rack** Maximum cable length, point-topoint (SNAP-SCM-232) Maximum cable length, multidrop (SNAP-SCM-485-422) Processor compatibility SNAP PAC R-series controllers and SNAP PAC EB brains, both standard wired and Wired+Wireless models. Also SNAP-B3000-ENET, SNAP-ENET-RTC, SNAP-ENET-S64, SNAP-UP1-ADS, and SNAP-UP1-M64. Operating temperature Storage temperature Torque, hold-down screws Torque, connector screws Agency Approvals * Module performance is...

SNAP Serial Communication Modules SNAP-SCM-232 Serial Communication Module SNAP LATCH MODULE BASE CONTROL CONNECTOR SIDE VIEW TOLERANCES LEGEND Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614-www.opto22.com © 2006-2015 Opto 22. All rights reserved. Dimensions and specifications are subjectto change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.

SNAP Serial Communication Modules SNAP-SCM-485-422 Serial Communication Module PLUGGABLE FIELD CONNECTOR CONNECTOR RELEASE LATCH SIDE VIEW SNAP LATCH MODULE BASE CONTROL CONNECTOR TOLERANCES LEGEND Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com © 2006-2015 Opto 22. All rights reserved. Dimensions and specifications are subjectto change. Brand or product names used herein aretrademarks or registered trademarks of their respective companies or organi

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