KB85141
Published: October 1, 2015
Revision: 1.0

SNAP-AIRATE-HFi reports value of 0 Hz instead of out-of-range value when field signal is below lower range


Applies To:

SNAP-PAC-R1
SNAP-PAC-R1-B
SNAP-PAC-R1-FM
SNAP-PAC-R1-W
SNAP-PAC-R2
SNAP-PAC-R2-FM
SNAP-PAC-R2-W
SNAP-PAC-EB1
SNAP-PAC-EB1-FM
SNAP-PAC-EB1-W
SNAP-PAC-EB2
SNAP-PAC-EB2-FM
SNAP-PAC-EB2-W
SNAP-PAC-SB1
SNAP-PAC-SB2

Versions Affected:

Problem affects versions: Firmware R9.3c
Problem is fixed in version: Firmware R9.3e

Resolved In Version:

Problem is fixed in version: Firmware R9.3e


Symptoms:

The value returned for a SNAP-AIRATE-HFi if the field signal is disconnected or less than the specified lower operating range is 0 Hz. This value appears if the module shows less than the lower range specification (20 Hz for "20Hz Min, 0.1s Refresh (0x44)" point type, or 2 Hz for "2Hz Min, 1s Refresh (0x45)" point type). 

However, the value returned should be an out-of-range value. For the SNAP-AIRATE-HFi module, the correct out-of-range value is -2147483648.

Workaround:

Use firmware R9.3e or newer for SNAP PAC rack-mounted controllers or brains with a SNAP-AIRATE-HFi module.

Resolution:

Opto 22 has resolved this issue.

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 © 2019 Opto 22. All rights reserved.