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KB83716
B3000-B Mistic brain reports 4-20 mA input signal outside the module's accuracy specification
Revision:  1.0
Published:  9/9/2014
Applies To
B3000-B
Versions
Problem was discovered in version:  
Firmware R3.7a
Problem is fixed in version:  
Firmware R3.7b

SYMPTOMS

Input signals may be reported inaccurately by a B3000-B. For example, if you configure a SNAP-AIMA-i module in a B3000-B as an AD3 using Mistic commands and store the configuration to flash, the B3000-B will initially read the input signal accurately.

But if you cycle power on the B3000-B, the brain will read input signals that are outside the module's accuracy range. Usually the error is 0.2 mA or greater. For example, if the input signal is 4 mA, the brain might report 3.75 mA (outside of the module's accuracy on the low side). Or it might report 4.25 mA (outside of the module's accuracy on the high side).

WORKAROUND

Reset the B3000-B back to factory defaults, reconfigure the brain, and do not store the configuration to flash memory.

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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