Note The access rights are not checked automatically. Use this information to accept only READ-signals in the signal list of input blocks and only WRITE-signals in the signal list of output blocks. Access rights Specifies after a validation whether the OPC item assigned to the signal is read only (READ), write only (WRITE), or read and write (READ / WRITE). Some OPC-servers supply their data as arrays. (only in the input block) Specifies the index with which you can access single values within a field. Ensure that only data types that DIAdem can process in the DAC area appear in this entry after a. Specifies the result of the last validation of the ItemID of the OPC item on the OPC server.ĭata type Specifies the OLE data type which the OPC server uses for the signal (OPC item). The ItemID creates the link between the signal and a real data source (OPC item for input blocks) or a data sink (OPC item for output blocks) to the OPC server. Specifies the identifier that DIAdem uses to access the signal on the. In the block diagram you can use this name, for example, to access the signal within a formula block. Specifies the short name of the signal with a maximum of 16 letters. The active key indicates whether the signal in a measurement is active. You can see the number when you close the OPC block and double click one of the incoming or outgoing green busses. DIAdem leads the signals from the block to the block diagram in the order of these numbers. Columns in the Signal List Active / Number Specifies a serial number of the signal. If you want to use signals or signal related buses in a block diagram, you must first define the signal and enable the signal. A signal list can contain up to 255 entries (signals). DIAdem 2015 Help Edition Date: June 2015 Part Number: 370858M-01 » The input and output terminals of a block lead every entry of the signal list out of the block as a bus.
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