Foundation Application Templates
Project Explorer
Using HART Analog I/O Signals
Assigning Facets and Generating the Control Project
Assign the instances of the $AnalogInput1 and/or $AnalogOutput template to the
Control project and generate it.
Refining the Control Project
Step
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Action
Refine the Control project.
Create the device DDT variables (see EcoStruxure ™ Process Expert, User Guide) of the HART analog I/O modules in the Control project.
Link each variable of the device DDT that represents a signal to the EXTPV input of the
DFB that has been generated by the corresponding facet.
Set the EXTPVEN input of these DFBs to true.
The following figure shows an example of the device DDT variable representing
QV of channel 0 of a HART analog input module that is linked to the EXTPV input of the AINPUT1 DFB. This is the DFB that was generated by the facet of the instance of the $AnalogInput1 template that has been created for the QV signal of channel 0. (The figure shows the default value for EXTPVEN ( false ).)
Performing the Hardware Mapping
To send the 4-20 mA signal to a HART analog output module, map the AOChannel interface of the $AnalogOutput template instance to the output channel of the
HART module by using the Hardware Mapping Editor .
Building the Control Project
Build the Control project. If you had already built the Control project a first time, use the Build All command.
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