Sierra 5391-02 - Manual (Page 39)

T12017-Sentry_LANServer_Users_Manual Page 39 of 59
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldserver.com
Tel: (408) 262-2299 Fax: (408) 262-2269 Toll_Free: 888-509-1970 email: [email protected]
Appendix 1.6. Buttons Display in White
The Windows CE 3.0 operating system does not automatically adjust daylight savings time
correctly; therefore ‘Daylight Savings Time’ should be disabled on Windows CE computers.
Failure to do this could result in cookie expiry when a transition occurs. This will result in the
screens indicating that the display objects are offline (white).
Ensure Daylight Savings Time is disabled. Set the time and date correctly. Now refresh the
page and wait a few seconds. If the buttons remain white then repeat this refresh a few
times.
Appendix 1.7. Cookie Length
The following statements are true irrespective of the operating system of the browsing
computer.
For many of the Sentry Controls, the HTML screens get data from the LANServer in the form
of cookies. The maximum cookie length is 3500 bytes. If the cookie length exceeds this limit
then the screens will not update correctly.
The driver prints a message in the error log if the cookie length nears this limit.
WEB: #60 Err. Web Pages won't update properly. Cookie Length Max/Rqd=%d/%d
Make sure this option is
selected.
White buttons indicate
(amongst other things)
expired cookies.