The CombinedChannelMonitoringType is a subtype of the ChannelMonitoringType and inherits all its InstanceDeclarations. Using this type instead of a ChannelMonitoringType provides an aggregated representation of the channels in a machine tool. The rules for aggregation are given in Table 23. Sometimes it is not necessary to provide one representation per individual channel, e.g. if one channel is of primary interest, the status of the remaining channels is irrelevant for the machine tool status. It could be used together with the separate channels. Typical applications are multi-spindle machines in which a large number of channels are used for interlinked work steps.
Table 23 – Rules for Aggregation of the CombinedChannelMonitoringType
|Component of the CombinedChannelMonitoringType||Rule for Aggregation|
|ChannelState||Mode of the channel not in “active”, otherwise “active” - if all channels active –> active - if >0 channel reset –> reset- else interrupted|
|ChannelMode||Mode of the channel not in “automatic”, otherwise “automatic”If one or more channel of the combined channels is not in “automatic” the machine tool is not producing (except if the channel is not currently in use). If for example the operator is in JogManual and moving one axis, the whole machine tool is not producing in automatic and the combined channel can be viewed as in JogManual|
|FeedOverride||selection from HMI mirroredOn most multi spindle machines there is one HMI which controls the whole machine tool, so most of the input is applied to all combined channels|
|RapidOverride||selection from HMI mirroredOn most multi spindle machines there is one HMI which controls the whole machine tool, so most of the input is applied to all combined channels|
|ChannelModifiers||If an element of ChannelModifiers is True in any channel, it has to be True in the combined channel.|
The CombinedChannelMonitoringType is formally defined in Table 24.
Table 24 – CombinedChannelMonitoringType Definition
|Subtype of the ChannelMonitoringType defined in 8.3.7 i.e. inheriting the InstanceDeclarations of that Node.|
|MachineTool Monitoring Basic - Channels|
The CombinedChannelMonitoringType contains no further References than the ones inherited.