Michelle Posted April 18 Share Posted April 18 (edited) I am trying to use data from a tag that utilizes strings (e.g. 'ON', 'OFF', 'FFWD', etc. etc.) but am receiving the below API error. I noticed that the UOM is incorrect and I believe that is why I can't pull this data to work on. Is there a way to ignore the UOM and grab the data from this tag as a list of strings vs. time? # Find the tag APC = spy.search({ "Name" : "/^tag$/", "Datasource Name": "source" }) APC # Sample calculation spy.pull(APC) Error encountered, scroll down to view ID Type Path Asset Name Time Count Pages Data Processed Result 0 0973736A-F4A7-4DC0-A8C2-758DC0E42B50 StoredSignal xxxx Tags tagTATUS 0 0 0 0 B (503) Service Unavailable - INTERNAL: Client data source exception: Error processing signal request for e5358933-f0b8-11ed-83b3-64d69ab1de78/ba208ed7-859e-49ef-ba59-a822a6d1e2d6 with start: 2024-04-18T19:30:00Z and end: 2024-04-18T20:45:00Z. Cannot convert 'ON' to type Double using UOM 'percent'. Exception: InvalidCastException Seeq API Error: (503) Service Unavailable - INTERNAL: Client data source exception: Error processing signal request for e5358933-f0b8-11ed-83b3-64d69ab1de78/ba208ed7-859e-49ef-ba59-a822a6d1e2d6 with start: 2024-04-18T19:30:00Z and end: 2024-04-18T20:45:00Z. Cannot convert 'ON' to type Double using UOM 'percent'. Exception: InvalidCastException Error found at line 2 in cell 14. Edited April 22 by John Brezovec Formatting Link to comment Share on other sites More sharing options...
Seeq Team Solution John Brezovec Posted April 22 Seeq Team Solution Share Posted April 22 You're correct that it looks like this signal has been assigned the improper unit. These errors get raised outside of SPy, so there isn't a way to ignore them in Python. If you try trending this same signal in workbench you should get the same error. This is either a datasource configuration issue or a historian misconfiguration -- I'd suggest raising a support ticket so we can help you track down the source of the issue: https://support.seeq.com/kb/latest/cloud/ Link to comment Share on other sites More sharing options...
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