User Manual

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Building Technologies MM8000 OPC Connectivity Configuration Guide
Fire Safety & Security Products 06.2007
4.3.2 Item class for ‘alarm’ conditions
Instead, an alarm condition with ack and reset, stored in OPC items as numeric 0,
1, and 2 value, can be converted into the MM8000 ‘Alarm’ property as illustrated in
the next two images.
A state life-cycle data (Fig 43) defines that OPC values 0, 1, and 2 are associated
to the Quiet, Unack, and Unreset states, respectively. Also, ‘Ack/Reset’ commands
are available (note that the appropriate command, either Ack or Reset, will be pre-
sented by the MM8000 software based on the current property state).
Fig 43 Item class definition (states) for on/off conditions
For the same item class, a command life-cycle data (Fig 44) defines the OPC val-
ues corresponding to the Ack and Reset commands.
Fig 44 Item class definition (commands) for on/off conditions
4.4 Item numbering
Item classes in each adapt set are numbered so that each class can be easily ref-
erenced in the CSV file for import. The Fig 45 shows how the class number is
shown in the class selection page associated to each item linked to the MM8000
OPC Driver.
Fig 45 Numbering of MM8000 OPC item class for S7