Allen-Bradley SoftLogix 5800, Руководство пользователя

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250 Rockwell Automation Publication 1789-UM002K-EN-P - January 2015
Appendix E System Performance Tuning Guidelines
When you open the utility, this information appears.
The Test Time utility monitors your system’s responsiveness to a repetitive 2 ms
timer. It displays both a textual and a graphical display of the timing response of
your computer. If your system is set up and operating properly the maximum
value in the range should be no greater than 3 or 4 ms. If the value is significantly
higher, your system is not appropriate for running SoftLogix Chassis Monitor
and performing machine control. Some reasons why your system might not
behave as expected include the following:
•
The system does not have bus mastering enabled. For information on
bus mastering, see the personal computer hardware considerations
in
Appendix D .
•
The system has an ‘ill-behaved’ device driver that violates the Microsoft
Windows Hardware Quality Lab (WHQL) guidelines. Verify that you
have the correct vendor-specific device driver loaded for your video,
Ethernet, sound, SCSI, IDE, and so forth. devices. These drivers should be
‘signed’ by Microsoft, or if provided by another vendor, the driver should
be certified by the Microsoft Windows Hardware Quality lab. Most
vendors will indicate driver that have been WHQL certified on their
driver download web page.
•
Your system has an ISA Ethernet or other expansion card that is not
bus-mastering capable. You can verify this by removing the ISA card and
running Test Time again.
•
There is another real-time priority application running on the personal
computer. Typically, the only commercially available software that can
cause this type of anomaly is CD writer software.