Revision 2.0 FOUNDATION Fieldbus ST 700 Pressure Transmitter User's Guide Page 89
4.3 Performing block instantiation
About block instantiation
A block instance is a copy of an available block in the device, say for example AI block.
There are totally 11 permanent blocks, and only three blocks support instantiation in a
device. The three blocks that support instantiation are Input Selector block, Signal
Characterizer block and Analog Input block. Two instances of the Analog Input block can
be instantiated, while the Input Selector block and Signal Characterizer block can be
instantiated only once respectively. A block can be instantiated or deleted.
Before block instantiation, the device checks whether the particular block is supported, and
if there is sufficient memory to store the parameters. After Instantiation, the instantiated
block must be loaded into the device, and then the strategies can be created.
ATTENTION
Note that only two blocks can be instantiated at a time. For example, you can
instantiate two AI blocks, or one Input Selector and one Signal Characterizer block.
Block instantiation using Experion PKS
The following are the steps for performing block instantiation using Experion PKS.
Step Action
1
From the DD at the Library-Containment window, select an instantiation
block from the supported blocks, that is Analog Input block, or Input Selector
block, or Signal Characterizer block.
2
Drag and drop the required instantiation block into the device on the Project-
Assignment window.
3
After adding the instantiation block into the device in the Project-
Assignment window, select the device.
4
Right-click the device, and click Load.
The instantiated block is loaded into the device.
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