OPC Clients
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OPC Clients

List of OPC Clients and groups attached to IOServer.

Group Name ClientNumber.GroupName 
Update Time (Sec) The update time for this group.

This Update time is only useful for protocols such as Modbus. In which the items are constantly polled.
The update time is the elapsed time for all items in that group to be updated at every poll cycle. At the start of each poll cycle, a read request is issued for all items in that group. The elapsed time is calculated when the last item is returned. IOServer then wait for the remaining of the time before starting the next poll cycle.
The update time is irrelevant for protocols such as DNP3, Kingfisher, IEC60870-5-103 and Harris HR6000 because the poll time is controlled internal by the device configured polling schedule or polling is only done by class.


 
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Last updated: 30 June 2016