UDP comm handles may lose data when packets are too large or sent too quickly

Applies To:

SNAP-PAC-S1
SNAP-PAC-S1-FM
SNAP-PAC-S1-W
SNAP-PAC-S2
SNAP-PAC-S2-W
SNAP-PAC-R1
SNAP-PAC-R1-FM
SNAP-PAC-R1-W
SNAP-PAC-R1-B
SNAP-PAC-R2
SNAP-PAC-R2-FM
SNAP-PAC-R2-W
SOFTPAC

Versions Affected:

Versions affected: All versions

Symptoms:

Note: This KB is for information only.
When using UDP, if packet sizes are larger than about 1200 bytes, or if the data transmission rate is faster than about 1 millisecond, SNAP PAC hardware controllers may not be able to receive the data, and communication handles in SNAP PAC Sim and SoftPAC software controllers may close unexpectedly.

Resolution:

The PAC Control User's Guide has been updated with this information.

Questions?

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

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