How to Add PID Loops to AspenWatch and Scan PID Loops on PCWS
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Products:
Aspen PID Watch Performance Monitor
Last Updated:
27-Jan-2023
Last Updated:
27-Jan-2023
Versions:
Article ID:
000100711
Article ID:
000100711
Primary Subject:
Problem Statement
This is a quick guide to add PID Loops in the AspenWatch DataBase and start a scanning on PCWS.
Solution
This procedure enlists the steps to Add PID Loops to AspenWatch. In this example we will AspenWatch Maker as the main interface to work.
1.- The first step is to create a Limited Tab text file that contains the Information of the tags that will required. A good example of this template can be found on C:\ProgramData\AspenTech\APC\Performance Monitor\Tools the file is called
Example_MiscPidTags.txt.
The file will ask you for some information about the tags that you want to add. In this example I have added two Temp tags, the only important thing you must remember is that under the column for TagType you have to specify 1, this indicates that the Tag is a PID tag. If you change this value for 0, that will indicate that is a Misc Tag. (the # indicates comment and won’t be parsed to AW, I suggest not modifying anything on the file except for the Tags)
2.- Then go to AspenWatch Maker and click on Import, you will have to specify the Text file Created and the interface will require a couple of details that will be used for the collection as the IO Device the Scan Period and the DCS template.
3.- After the PID loops were created it will be necessary to Configure the Tags, by clicking the Configure Button, the status of the tags should change from Initial to Configure and If no errors are encounter, it will change from CONFIG to ON. If everything is fine the tags will display NORMAL under the Scanning Button.
Scanning PID Tags on PCWS
4.- Once the Tags are ON, they will appear automatically on PCWS, under history and then on PID loops. Go to group configuration and this section you can configure one groups that contains all tags that will be scanning.
PID Group = is the name of the new PID Group
Description = Description of the group
Start Time = Date and hour when the Scanning should Start
End Time = Date and hour when the Scanning should Stop
PID Schedule Recurrence = Period in which the scanning will be repeat starting from the Start time
Then on the Tags List you should add the tags that will be part of the PID Group, from available to Selected (a good suggestion is not to scan more than 100 tags at the same time). In this case the final configuration of the group is as it is shown below:
For all changes to get saved it is required to click on the apply button, the new group should be created with an Idle (inactive) status.
When the Schedule start it will show a Scanning Status
Once it finishes it will go back to Idle and you could be seeing results on the Analysis tab.
if the scanning is Ok, it should start showing the proper results as long as the configuration on AW and the communication to the DCS for those tags are Ok.
Keywords
AspenWatch, PCWS, PID Loops