KB81002
Published: August 8, 2011
Revision: 2.0

PAC Simulator appears to run strategy, but logic is not executing


Applies To:

SNAP PAC Sim Control Engine Simulator
SNAP-PAC-S1
SNAP-PAC-S2
SNAP-PAC-R1
SNAP-PAC-R2
SNAP-PAC-S1-W
SNAP-PAC-S2-W
SNAP-PAC-R1-W
SNAP-PAC-R2-W

Versions Affected:

Problem was introduced in version: R9.0a
Problem is fixed in version: R9.0b

Resolved In Version:

Problem is fixed in version: R9.0b


Symptoms:

If PAC Simulator is used as the control engine, PAC Control debug mode may appear to run the strategy, but the strategy logic is not executing. This problem occurs in both Windows XP (32-bit operating system) and Windows 7 (64-bit operating system).

The problem is likely to occur if the same variable is accessed by two or more tasks, such as when a chart accesses a variable and at the same time, a variable is inspected in a watch window; or when two charts access the same variable. Additionally, suppose there are 10 charts running, but only two charts access the same variable, the two charts may stop executing logic, but the other eight charts continue to run.

There is a very small possibility that his problem can occur in the SNAP PAC hardware controllers.


Questions?

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


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