Myalarm V-LCD1 Manuel d'instructions télécharger pdf (Page 68)

NETWORKING

7-62

System 2 Installation / Programming Manual

Network Speed and Processing Time

The master polls a slave once a second so that it has time to process its own events. For this reason, a master

should be assigned doors with the least amount of traffic. This will allow the master to keep up with its

network duties and respond quickly to its own door events. When a master gets bogged down processing its

own events, it reduces the number of polls it can do. Normally, in a no load condition, the master polls the

network sixty times a minute. With a system load of 20 events per minute on a master and 40 events per

minute on a slave, the number of polls a master can do is 30/minute. For this reason, the buffer size on each

slave needs to be large enough to accommodate the system traffic. When in doubt, it is always better to set up

a larger buffer than a small one.

Note: The maximum number of events a master can process is 20 events per minute. The

maximum number of events a slave can process 40 events per minute. If these

maximums are exceeded, system performance will degrade, response time will increase

and events may be lost.

Response Time

The master will process code requests and operate the main door relay within .25 seconds in a no-load

situation to within 1 second at a maximum load of 20 events per minute. Slaves are slightly faster and range

from .25 seconds to .5 seconds with a maximum of 40 events per minute.

Programming Considerations

Programming on a networked system should only be done at off peak times whenever possible. The

processing of codes and events at the master may slow down and events may be lost under the following

conditions, especially if slave buffers are not made large enough. The events report in Option 11, when run,

will stop the master from polling for events. The master will continue to process its own events, and the slaves

will process their own events, but the master will not get any events from the slave(s). Batch loading users in

Option 9 or loading codes in Option 8 will stop the master from polling and processing its own events.

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Myalarm V-LCD1 Manuel d'instructions Page 68