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KB81390
SNAP-PAC-SB Brains may drop packets at 230.4 kBd
Revision:  4.0
Published:  12/2/2011
Applies To
Firmware for:
SNAP-PAC-SB1
SNAP-PAC-SB2
Versions
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

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.

CASE STATUS

Opto 22 has resolved this issue.

Relevant Downloads
No relevant downloads have been specified.
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