(USA and Canada only)
Pulse Width Range1
3.84 Sec to 10 µSec
Pulse Width Accuracy2
0–2 Hz, 2–30 Hz, 30–50,000 Hz
(see graphs on the next page)
Logic Supply Voltage
Logic Supply Current
Compatible I/O Processors
SNAP PAC R-series controllers and EB-series brains with R9.1a or newer firmware
Fixed at 50%
Number of Ports per Module
Operating Temperature Range
Storage Temperature Range
30 months from date of manufacture
1Pulse Width is equal to one-half the period.
2To find the frequency error in Hz:
Frequency Error (+/-) = Desired Frequency - (1 ÷ (Pulse Width Resolution + (1 ÷ Desired Frequency))).
The SNAP-SCM-ST2 pulse output module is a two-channel serial communication module that provides pulse and direction signals for stepper motor drives.
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 SNAP I/O units.
Each of these modules conveniently provides serial data at a remote Ethernet location.
This document is a statement of compliance with the EU Directive 2015/863/EU, Restriction of Hazardous Substances (RoHS 3). This document lists Opto 22 products that comply with the substance restrictions of the RoHS 3 directive.
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.
This file contains firmware for the SNAP-SCM-ST2 pulse output module. This firmware includes support for the ReadPulseFrequency command.
A quick overview on securing a SNAP Module to a SNAP rack.
A quick overview on removing a SNAP module.
What's the difference between accuracy and resolution in analog I/O specifications? Try your own specs in the calculator.