KB83828
Published: April 1, 2016
Revision: 2.0

SNAP analog module loses custom scaling configuration


Applies To:

Versions Affected:

Problem affects versions: Firmware, all versions through R9.4c
Problem is fixed in version: Firmware R9.5a

Resolved In Version:

Problem is fixed in version: Firmware R9.5a


Symptoms:

If an analog module on the rack has not been discovered by the brain or rack-mounted controller when configuration occurs, any custom configuration will be overwritten with defaults when the analog module first boots.

This situation can occur when marginal power supply voltage causes the brain to boot before the module does. If the situation occurs, configurations stored to flash, or strategies configured to Autorun, may attempt to configure points before the module is communicating with the brain.

Workaround:

  • Make sure that the proper power supply voltage is provided. See the Power Supplies Tech Note, form 1271.
  • Routinely check point configuration from your control strategy and reapply custom configuration when an incorrect configuration is detected.

Resolution:

Opto 22 has resolved this issue.

NOTE: To implement this solution, you must upgrade the firmware to R9.5a (or higher) in the I/O unit and in the control engine.

Questions?

Contact: Opto 22 Product Support.
Phone: 800-835-6786 or 951-695-3080
Email: support@opto22.com


DISCLAIMER

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.

OPTO 22 DISCLAIMS ALL WARRANTIES WHETHER EXPRESSED OR IMPLIED WITH RESPECT TO THE INFORMATION (INCLUDING HARDWARE, SOFTWARE, AND/OR FIRMWARE) PROVIDED HEREBY, INCLUDING THE IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE, MERCHANTIBILITY, AND NON-INFRINGEMENT. Note that certain jurisdictions do not sanction the exclusion of implied warranties: thus, this disclaimer may not apply to you.

Copyright © 2018 Opto 22. All rights reserved.