SNAP-SCM-232 OPTO 22, SNAP-SCM-232 Datasheet

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SNAP-SCM-232

Manufacturer Part Number
SNAP-SCM-232
Description
I/O Module
Manufacturer
OPTO 22
Type
Communicationr
Datasheets

Specifications of SNAP-SCM-232

Accessory Type
2 Channel RS-232 Serial Communication Module
Leaded Process Compatible
No
Peak Reflow Compatible (260 C)
No
Brand/series
SNAP Series
Connection To Host
Backplane
Current, Input
250 mA
Dimensions
82.55mmL×18.29mmW×69.85mmH
Module Type
Serial Communication
Number Of Channels
2
Primary Type
Control
Standards
CE Marked
Voltage, Isolation
750 VAC
Voltage, Supply
5 VDC
For Use With
Snap I/O Modules
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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.
LED indicators are provided on each module to indicate
Transmit and Receive on each port.
Both SNAP serial communication modules work with SNAP
PAC Ethernet-based brains and rack-mounted controllers,
both standard wired models and Wired+Wireless
(They do not work with serial-based SNAP PAC brains.) These
modules snap into Opto 22 SNAP PAC mounting racks right
© 2006–2011 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.
Features
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 rack
30-month warranty
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.
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
models.
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-SCM-
232 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, a short (12-inch), unshielded
twisted-pair cable and both male and female RJ-45 to DB-9
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 B-
series 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 SNAP-
SCM-485-422 also requires firmware 5.0 or newer. An older
module part number, SNAP-SCM-485, supported 2-wire RS-
485 only.
Part Numbers
SNAP-SCM-485-422
SNAP-SCM-232
Part
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • www.opto22.com
SNAP Serial Communication Modules
Two-channel RS-232 serial
communication module
Two-channel RS-485 (two-wire) or
single-channel RS-485/422 (four-wire)
serial communication module
Description
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SNAP-SCM-232 Summary of contents

Page 1

... SNAP Serial Communication Modules Features 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 ...

Page 2

... Baud rates Channel-to-channel isolation Logic supply voltage Logic supply current Number of ports per module Max. number of modules per rack** Maximum cable length, point-to- point (SNAP-SCM-232) Maximum cable length, multidrop (SNAP-SCM-485-422) Processor compatibility Operating temperature Storage temperature Torque, hold-down screws Torque, connector screws ...

Page 3

... SNAP Serial Communication Modules Dimensions SNAP-SCM-232 Serial Communication Module 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 © 2006–2011 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 4

... 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 4 © 2006–2011 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 Serial Communication Modules ...

Page 5

... SNAP I/O I/O provides the local connection to sensors and equipment. Opto 22 SNAP I/O offers points of reliable I/O per module, depending on the type of module and your needs. Analog, digital, serial, and special-purpose modules are all mixed on the same mounting rack and controlled by the same processor (SNAP PAC brain or rack-mounted controller) ...

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