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$1,350.00 (USA and Canada only)

Availability: In stock
OBSOLETE - Ethernet Card for M4 Series Controllers and FactoryFloor systems

Production Specification

NOTE: This product is obsolete when stock is depleted.

The M4SENET-100 provides an Ethernet interface for M4 series controllers such as the SNAP-LCM4 and the M4RTU. Connection is via a 10Base-T or 100Base-TX link, and standard TCP/IP transport is used for all transactions.

NOTE: This Ethernet card is designed for use with FactoryFloor software.




Card Type

Ethernet NIC, communication coprocessor

Transports Supported


Maximum Sessions

128 total; up to 128 for SNAP Ethernet I/O, up to 32 for host or peer


Ethernet 10Base-T or 100Base-TX Auxilliary: RS-232C
(for maintenance and kernel downloads)

Data Rate

10 or 100 Mbps auto-detected on Ethernet
19.2 Kbps or software selectable on serial port (maximum 115.2 Kbps)

Cable Type

Solid-core unshielded twisted pair, Category 5 recommended for
10 Mbps and required for 100 Mbps

Maximum Distance

100 meters from hub to node for single segments


One RJ-45 Ethernet One five-position Phoenix type for serial port

Current Draw

1.00 Amps

Jumpers (Internal)

Boot to kernel/Boot to loader Normal operation/Restore factory defaults

Operating Temperature

0 to 70 °C

Storage Temperature

-40 to 85 °C


0–95% humidity, non-condensing


M4 Controller Ethernet Card Data Sheet

The M4SENET-100 is an Ethernet network interface card designed for Opto 22's M4 series controllers, such as the SNAP-LCM4 and the M4RTU.

SNAP-LCM4 Data Sheet

*** This product is obsolete and no longer available. ***
The SNAP-LCM4 is a powerful industrial controller that provides real-time control and communication to input/output (I/O) systems, serial devices, motion controllers, and networks.

M4SENET-100 Adapter Card Firmware README

This README file lists revision changes made to the firmware used in the M4SENET-100 adapter card. This adapter card is used to connect Opto 22 industrial controllers to standard 10/100 Mbps Ethernet networks.

M4-Series Controller Ethernet Card Installation Guide

The M4SENET-100 is an Ethernet network interface card designed for Opto 22’s legacy M4-series industrial controllers, such as the SNAP-LCM4 and the M4RTU.

Note: M4 controllers are not recommended for new development. For new development, use SNAP PAC S-series controllers.

M4SENET-100 Ethernet Adapter Card Firmware

This file contains the current release of the M4SENET-100 Ethernet adapter card firmware, which includes a Telnet interface for communicating with the card.

Important Instructions
If you are upgrading firmware on an M4SENET-100 card manufactured prior to August 2003 (or a card that has firmware prior to version 5.0), you will need Form 1156, the M4SENET-100 Installation Guide.

Here are the steps:

1. Write down all settings that you have saved to flash, for example, security settings.

2. Important: Using the Operation Code in the Status Write area of the Web pages for the card, clear flash memory.

3. Now load the new firmware, following instructions in Form 1156, M4SENET-100 Installation Guide.

4. Using Telnet and following the steps in  Form 1156, M4SENET-100 Installation Guide dated June 2003 or newer, reset the settings you wrote down in step 1 and save them to flash.

If you did not clear flash memory (step 2), Telnet will not work with your card. In that case, you must reset the card to factory defaults and then assign an IP address to it before you can reset settings. Steps for resetting to factory defaults and assigning an IP address are in Form 1156, M4SENET-100 Installation Guide.

AutoCAD Drawings

This file contains AutoCAD drawings of Opto 22 products dating from 1988 to 2003. These are the same drawings that have been available on our BBS. Included is an Excel file describing the file names and relevant Opto 22 part numbers.

Ethernet Controller Driver - Linux

A demo that's like the OptoTerm program for Windows. It demonstrates how to retrieve strategy information from the controller and other simple information. This package only supports an Ethernet interfaced controller (SNAP-LCM4, M4, or M4RTU).

SNAP Ethernet I/O BootP Server - Linux

A BootP server for configuring the IP address of the SNAP Ethernet brains and the M4SENET-100 adapter card.

Before you download, read the Legal Agreement.

No videos or demos are available for this product.