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Advantech ADAMView - Page 22

Advantech ADAMView
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17
(c)ADAMView has a dedicated timer for network communication. The polling time of the timer can be
different from the scan time. The polling time is set in the configuration file \WINDOWS\ADAMView.INI
(the entry NetPollTime). The value of polling time depends on the number of stations and blocks.
You can use the following equation to calculate the approximate polling time:
Polling time = (Station * (Station - 1)) / 2) * base polling time
Total time for transferring all blocks
= (Network blocks/10) * polling time
which base polling time depends on your PC’s performance. Based on our tests, for three stations
running on a Pentium 166 with 64M RAM, and forty blocks for each station, the polling time can be
up to 500 milliseconds.
(d) The maximum string size for each channel of a network block is 32 characters (including a Null
character).
(e)ADAMView networking can work in Windows 95/98 but not in Windows 3.1.
(f) When restarting networking, you must wait for a few moments to make sure that the remote station
receives the stopping message. If you fail to check this, proper connection with the remote station
may not occur. If this happens, you will have to stop all stations and start again. You can check the
Event window to make sure that the remote station receives the stopping message.
(g) Connection status will show in the Event window. It will also be entered into the alarm log file
(ADAMView.ELF) by enabling the event log under Runtime Preferences.

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