Setting External Targets on a DMC3 and DMCplus Controllers
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Products:
Aspen DMC3, Aspen DMC3 Builder
Last Updated:
05-Jan-2022
Last Updated:
05-Jan-2022
Versions:
Article ID:
000099416
Article ID:
000099416
Primary Subject:
Problem Statement
External Targets are common requests for APC users. This is a quick guide on how External Target can be set up on DMC3 Builder and DMCplus build.
Solution
Setting External Targets on DMCplus:
To enable External Targets in a CCF file, select the Tools menu and then select Options. Then select the General tab and here can be found the option External Targets. This option will allow enabling the External Target for the controller and it allows to select between three options:
Not used. - Which will not take into consideration ET
Full RTO. - Real Time Optimization Values
Limited Use (IRV). - Ideal Resting Values
Please Refer to solution
https://esupport.aspentech.com/S_Article?id=000015581
“How do I pick between "Full Use (RTO)" and "Limited Use (IRV)" type when enabling External Targets?”
for more detailed information about RTO and IRV.
In addition, this window will allow enabling the ET in the Online Controller.
The next step is to select the variable(s) which is desired to Enable the External Target. By selecting the variable, it will notice that the External Target flag is now active in the top ribbon. check on this flag and this will now display new parameters for the variable selected.
Finally, choose the ETCV parameter and double-click on it. On default value change it to 1 and in Tag name, you must write the Tag that will be written/read by the external software. In addition, in the Keyword, you can also change what kind of action the external software will have on such Tag. Also, you need to specify the CIM-Io device and Source.
Setting External Targets on DMC3:
On the DMC3 file, you can set the External Target from the Optimization Tab from the controller tree.
On the Optimization, the tab goes to the top ribbon and click on Configure Optimizer, then select the ET option on the Target type selector in the Case Actions Tab.
Then it must be selected which variable will have the External Target, this can be done by selecting the External Target type on the Target option from each variable.
On the simulation Tab, click on the variable which has the External Target and find the TARGET attribute. Also, It will be noticed that the combined status Is changed to Target.
In the case of DMC3 the TARGET attribute is the equivalent to ETCV described above for the CCF file.
On the deployment tab on the controller tree. In this Tab select the Variable that has the ET and it will be noticed that the attribute TARGET is shown in the variable detail Panel. However, if is it not shown, this parameter can be enabled from the option customize on the top ribbon. Click on Customize and find the option TARGET then check it.
Finally, the information of IO Souce, IO Tag, and IO database should be filled in as it was done in the case of a CCF file.
Keywords
DMCplus, DMC3, External Target