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Availability: Obsolete
OBSOLETE Opto 22 Classic SX Controller for FactoryFloor systems

Production Specification

IMPORTANT NOTE: Due to difficulty obtaining parts, this controller is obsolete and no longer available.

For new development, system expansion, or modernization, we recommend using the SNAP-PAC-S2 standalone controller and the PAC Project Professional software suite. SNAP PAC S-series controllers with PAC Project Pro offer a migration path for legacy mistic systems.

For migration information, see the FactoryFloor to PAC Project Migration Technical Note.
IMPORTANT NOTE: Due to difficulty obtaining parts, this controller is obsolete and no longer available.


32-bit Motorola 68020 processor
IEEE floating-point math

CPU clock frequency

16.67 MHz

  Flash EEPROM on controller


256 KB - 1 MB with battery backup (user programs & data)
256 KB - 1 MB (firmware and user programs)

RAM/clock battery

3.6-volt lithium, non-rechargeable


Via RS-485 ports, using Opto 22 I/O

  Base unit


2 combined RS-232 or RS-485/422 ports, local bus port.
Via daughter cards: configurable serial ports, ARCNET.

Real-time clock

Clock/calendar, Epson 62421A with battery back

Power requirements

5.0–5.2 VDC @ 2.0 A

Typical operating temperature

0 °C to 70 °C

Storage temperature

0 °C to 70 °C


5% to 95% relative humidity


FactoryFloor (OptoControl, OptoDisplay and Optoserver)
Classic Software (Cyrano, Mistic MMI, MDS)

System monitors
  Host communications
  Watchdog timers
  RAM battery backup low
  Operating temperature


Detect communication errors from processor, I/O, etc.
Detect main power supply operation
Detects program corruption (check sum RAM test)
Detects temperature


RAM & EPROM Memory Expansion Options Data Sheet

****  These parts are obsolete and no longer available. ****

Tables and other information for selecting RAM and EPROM expansion options for controllers.

Low Cost, High Performance Mistic 200 Controller Data Sheet

The G4LC32SX is a cost effective, high performance controller designed to work within the Opto 22 family of rugged, compact controllers and I/O units.

OptoControl-based Controller Firmware README

This README file lists revision changes made to the firmware used in the following Opto 22 controllers that run OptoControl strategies: G4LC32, G4LC32SX, M4, M4IO, M4RTU, SNAP-LCSX, SNAP-LCSX-PLUS, and SNAP-LCM4.

Mistic Installation Guide

Guide for configuring and installing the Mistic 200 System.

G4LC32SX Users Guide

This manual contains information about configuration, installation, and communications connections to the G4LC32SX controller.

Mistic 200 Family Data Book

Mistic 200 Family Data Book

CE Declaration: EMC

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.

BETA firmware for OptoControl-based controllers

This download contains BETA firmware for Opto 22 controllers running OptoControl strategies.

Beta Version Disclaimer:

OptoControl is a legacy product, which is no longer getting new features and no longer going through official release cycles. Beta versions of the firmware are made available as-is for those who need the related bug fixes.

In general, beta versions will include bug fixes since the last official release, without adding new features. This usually enhances product stability without introducing unwanted side effects. Beta versions for legacy products have been through basic testing only, and will not be formally tested.

Ultimately, the choice will be up to the user as to whether the benefit of using the beta version is worth the risk. We simply want to make the beta version available so that you have options.

G4LC32SX Controller Firmware

This download contains the current firmware for the G4LC32SX controller. The download also includes firmware for SNAP-LCM4, SNAP-LCSX, SNAP-LCSX-PLUS, M4, M4RTU, and other Opto 22 OptoControl-based controllers.

Note: This firmware is used in conjunction with OptoControl 4.0 and FactoryFloor 4.0 or higher. Please see important information about this firmware version in the README file included in the download. 

Cyrano Flash Firmware and Installation Utility

Current release of 16-bit Cyrano firmware. This firmware is required to run Cyrano strategies on Opto 22 controllers. This file installs the Opto 22 Flash 200 utility (version R3.1i) and Cyrano firmware (version R3.2j).

Cyrano Software

The predecessor to OptoControl, Cyrano is a DOS application for flowchart control programming. This software does not run under Windows NT.

Mistic MDS

Mistic MDS is the predecessor to OptoServer. It is a DDE-only server for the Cyrano tagname database that operates under Windows 3.x.

Mistic MMI

Mistic MMI is the predecessor to OptoDisplay. It is a 16-bit Windows 3.x Man-Machine Interface package that is tightly integrated with Cyrano.

OptoTerm Utility for OptoControl Controllers

This download contains a full installation of the most recent version of OptoTerm, a software utility for:

  • Downloading new firmware to an OptoControl-based controller.
  • Viewing the status of an OptoControl-based controller.

No videos or demos are available for this product.