Opto 22
43044 Business Park Drive, Temecula, CA 92590 USA
Local & outside the USA:(951) 695-3000
Toll-Free within the USA:(800) 321-6786
Fax: (951) 695-3095
Email: sales@opto22.com
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SNAP 2-Ch RS-232 Serial Communication Module
$295.00 USD
Price in USA and Canada Only
Availability: In Stock
The SNAP-SCM-232 provides two RS-232 serial communication ports for two channels of high-speed, isolated serial data. Used with a brain or R-series controller, the module connects serial devices such as printers, scales, chart recorders, and barcode systems to an Ethernet network for control, monitoring, or data acquisition.
Part of the SNAP PAC System, the module mounts on a SNAP PAC rack with a SNAP PAC brain or rack-mounted controller. Analog, digital, and serial I/O modules can all be on the same rack. Such an I/O unit is also well suited for PC-based control or for use as intelligent remote I/O for an Allen-Bradley MicroLogix PLC or other RSLogix-based system, such as ControlLogix or CompactLogix.
NOTE: The SNAP-SCM-232 can also be used with a legacy SNAP Ultimate, SNAP Ethernet, or SNAP Simple brain.
For similar serial communication using RS-485/422, see SNAP-SCM-485-422.
Baud rates
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300–115,200*
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Channel-to-channel isolation
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750 VRMS
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Logic supply voltage
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5.0 VDC
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Logic supply current
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250 mA DC
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Number of ports per module
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2 (1 if SNAP-SCM-485-422
in 4-wire mode)
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Max. number of modules
per rack**
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8
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Maximum cable length,
point-to-point (SNAP-SCM-232)
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50 feet
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Maximum cable length,
multidrop (SNAP-SCM-485-422)
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1,000 feet at 115,200
Kbd
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Processor compatibility
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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.
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Operating temperature
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0 to 70 °C
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Storage temperature
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-30 to 85 °C
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Agency Approvals
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CE, FM, RoHS, DFARS
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Warranty
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30 months
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* Module
performance is limited by the number of serial modules on the SNAP rack.
Each rack backplane provides approximately 2.5 Mbps of bandwidth.
** Maximum number of modules
per rack assumes an Opto 22 SNAP power supply and SNAP rack.
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| 1184 |
SNAP serial communication modules are designed for use with the SNAP PAC System and can also be used in I/O units without a controller. Each module provides one or two channels of serial data—RS-232 or RS-485/422—at a remote Ethernet location, on the same mounting rack with digital and analog I/O.
This document describes the SNAP-SCM-232 and SNAP-SCM-485-422 serial communication modules.
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The SNAP-SCM-232, SNAP-SCM-485-422, SNAP-SCM-PROFI, and SNAP-SCM-W2 serial communication modules are designed for use with the SNAP PAC System and can also be used in standalone I/O units. Each of these modules conveniently provides serial data at a remote Ethernet location.
The SNAP-SCM-232 and SNAP-SCM-485-422 typically interface with printers, scales, chart recorders, and barcode systems. The SNAP-SCM-PROFI provides a standard electrical interface with PROFIBUS DP® networks. The SNAP-SCM-W2 complies with the Wiegand interface format and is ideal for access control applications.
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Upland, California-based New Bedford Panoramex Corporation (NBP) specializes in the design and development of air traffic control systems and lighting systems used in the aerospace and aviation industry.
NBP is also the developer of the Integrated Wireless Access System (IWAS), which provides a wireless solution for airport control towers to access and control remote field equipment and lighting systems. The key components of the IWAS are Opto 22 SNAP PAC System programmable automation controllers and SNAP I/O systems.
Each IWAS is configured to interface to a specific type of equipment and each IWAS' SNAP PAC System includes a controller and the appropriate I/O modules for monitoring and controlling this equipment. For example, serial modules provide a bi-directional interface to read and write to older types of equipment; analog input modules monitor lighting systems' voltage input status; digital input modules track the systems' on/off status; and digital output modules enable remote on/off switching.
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This CAD file includes drawings for the SNAP-SCM-232 serial communication module. This module provides two RS-232 serial ports, so that local serial devices can communicate with the SNAP PAC I/O processor (rack-mounted controller or brain).
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