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KB85141
SNAP-AIRATE-HFi reports value of 0 Hz instead of out-of-range value when field signal is below lower range
Revision:  1.0
Published:  10/1/2015
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
Problem affects versions:  
Firmware R9.3c
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.

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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