Opto 22

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KB59253
CPU change for M4RTU controller
Revision:  5.0
Published:  6/17/2008
Applies To
M4RTU
Versions
Controllers with:  
"Rev. 2" on white label
Controllers manufactured:  
August 2007 and after

DESCRIPTION

The central processing unit (CPU) for the M4RTU controllers has been changed. As a result, only OptoControl firmware versions R3.0c and R4.1d or newer are compatible with the updated controllers. Other versions will not work with the newer controllers.

For applications that were running OptoControl R2.2 strategies on controllers with R2.2 firmware, the R3.0c firmware can be substituted in a newer controller. Firmware version R3.0c is compatible with OptoControl R2.2 strategies.

For applications that require firmware R4.1d or newer, download the firmware file from the Opto 22 web site. The newer controller will use a firmware file that follows this naming convention: o4ertuXXX. Older hardware uses firmware that follows this naming convention: o41rtuXXX and o44rtuXXX.

How to Identify Newer Controllers

Controllers with the newer CPU have a white label with "Rev. 2." The label is adhered to the green mounting rack below the top controller cover, between the digital and analog modules.

Additional Information

Also reference Form 1651 from the Opto 22 web site for additional information about this change.

Relevant Downloads
No relevant downloads have been specified.
Questions? Contact Opto 22 Product Support.
Phone: 800-835-6786 or 951-695-3080
Email: support@opto22.com

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This Opto 22 Knowledge Base ('OptoKB') article is intended to provide general technical information on a particular subject or subjects and is not an exhaustive treatment of such subjects. Accordingly, the information in this OptoKB article is not intended to constitute application, design, software, or other professional engineering advice or services. Opto 22 may modify the OptoKB articles at any time. Before making any decision or taking any action which might affect your equipment, you should consult a qualified professional.

OPTO 22 DOES NOT WARRANT THE COMPLETENESS, TIMELINESS, OR ACCURACY OF THE DATA CONTAINED IN THIS OPTOKB ARTICLE AND MAY MAKE CHANGES THERETO AT ANY TIME AT ITS SOLE DISCRETION WITHOUT NOTICE. FURTHER, ALL INFORMATION CONVEYED HEREBY IS PROVIDED TO USERS 'AS IS.' IN NO EVENT SHALL OPTO 22 BE LIABLE FOR ANY DAMAGES OF ANY KIND INCLUDING DIRECT, INDIRECT INCIDENTAL, CONSEQUENTIAL, LOSS PROFIT, OR DAMAGE, EVEN IF OPTO 22 HAS BEEN ADVISED ON THE POSSIBILITY OF SUCH DAMAGES.

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