KB81390
Published: December 2, 2011
Revision: 4.0

SNAP-PAC-SB Brains may drop packets at 230.4 kBd


Applies To:

SNAP-PAC-SB1
SNAP-PAC-SB2

Versions Affected:

Affects all versions up to and including: R8.5e and R9.1b
Resolution is included beginning in version: B8.5f and B9.1c, Build date 8/22/2011
Problem is fixed in version: R9.1d

Resolved In Version:

Problem is fixed in version: R9.1d


Symptoms:

Serial communication packets may be dropped on an RS-485 link with two or more SNAP-PAC-SB1 or SNAP-PAC-SB2 brains that are set to 230.4 kBd, and that have at least one analog module installed on any brain's rack. Periodic -539 messages are displayed in the controller message queue.


Workaround:

To work around this problem, use 115.2 kBaud to communicate to the brains.


Questions?

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


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