SNAP-SCM-W2

Availability: In stock
SNAP 2-Ch Wiegand Interface Serial Communication Module

Please call (800) 321-6786 to order.

SNAP-SCM-W2

Production Specification

The SNAP-SCM-W2 provides two isolated channels of data input from attached devices that comply with the Wiegand interface format. The module complies with the Security Industry Association Standard Protocol for the 26-bit Wiegand Reader Interface and is ideal for access control applications using that protocol.

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 system, or other RSLogix-based system, such as ControlLogix or CompactLogix.

NOTE: The module is also compatible with legacy SNAP Ethernet, SNAP Simple, and SNAP Ultimate I/O.

Build your system in the SNAP I/O Configurator.

Channel-to-channel isolation

250 Vrms

Logic supply voltage

5.0 VDC (± 0.15)

Logic supply current

250 mA

Number of ports per module

2

Maximum number of modules per rack*

8

Maximum cable length

See table below

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

-20 to 70 °C operating
-30 to 85 °C storage

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

* With Opto 22 SNAP power supply and SNAP rack

SNAP PAC System Product Guide

This document lists and describes all Opto 22 SNAP PAC System part numbers, including PAC Project software, SNAP PAC controllers, SNAP PAC brains, and SNAP I/O modules of all kinds. SNAP PAC mounting racks and SNAP power supplies are also listed.

SNAP Wiegand Module Data Sheet

Ideal for access control applications, the SNAP-SCM-W2 serial communication module provides two channels of data input from attached devices that comply with the Wiegand interface format. The module works with analog/digital/serial SNAP Ultimate and SNAP Ethernet brains and with SNAP-IT units.

SNAP Serial Communication Modules User's Guide

The SNAP-SCM-232, SNAP-SCM-485-422, SNAP-SCM-PROFI, SNAP-SCM-W2, SNAP-SCM-CAN2B, and SNAP-SCM-ST2 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-CAN2B provides an interface to a Controller Area Network (CAN), so your SNAP PAC system can receive data from CANbus devices.
  • - The SNAP-SCM-ST2 provides pulse and direction signals for stepper motor drives.
  • - The SNAP-SCM-W2 complies with the Wiegand interface format and is used for access control applications.

Declaration of Conformity (LVD, RoHS)

This document is the Manufacturer's Declaration of Conformity for the products listed herein, in accordance with European, international, and/or national standards and regulations.

Opto 22 RoHS 2 Statement of Compliance - Restriction of Hazardous Substances

This document is a statement of compliance with the EU Directive 2011/65/EU, Restriction of Hazardous Substances (RoHS 2). This document lists Opto 22 products that comply with the substance restrictions of the RoHS2 directive.

Technical Note: Door Access Manager

This technical note introduces two sample applications for use with SNAP-SCM-W2 (Wiegand) serial modules and SNAP Ultimate I/O: an ioControl strategy that configures modules and handles up to 16 doors, and a utility program for managing user names and entry permissions.

CE Declaration: Low Voltage

This document is the Manufacturer's Declaration for the listed products as mentioned in the attachment - to which this confirmation refers - that they are in accordance with the mentioned European, international and/or national standards and regulations.

ioDoor Access Manager

ioDoor Access Manager is a sample utility program for use with SNAP-SCM-W2 serial communication modules. These modules comply with the Security industry Association Access Control Standard Protocol for the 26-bit Wiegand(R) Reader Interface.

The utility program, written in Visual Basic, manages user names and entry permissions. It is designed to be used with the sample ioControl strategy Door Control, which is a separate download.

This file is freeware. Before you download, read the Legal Agreement.

Sample Door Control Strategy

The Door Control Strategy is a sample ioControl strategy for use with SNAP-SCM-W2 serial communication modules. These modules comply with the Security Industry Association Access Control Standard Protocol for the 26-bit Wiegand(R) Reader Interface. The sample strategy configures modules and handles access for up to 16 doors and up to 4200 users.

Also download ioDoorAccessManager, a utility program for managing user data.

This file contains sample code. Before you download, read the Legal Agreement.

Video: Securing SNAP Module

A quick overview on securing a SNAP Module to a SNAP rack.

Video: Removing a SNAP Module

A quick overview on removing a SNAP module.

Demo: Accuracy vs Resolution

What's the difference between accuracy and resolution in analog I/O specifications? Try your own specs in the calculator.