Questions & Answers Category

Forward data to another historian

The mirror functionality was discontinued and Steve Mason proposed this a "proxy configuration that can forward the data along to another historian." What is that exactly?…

CanaryEvents.sqlite - Is it being purged?

Hello all Is the CanaryEvents.sqlite being automatically purged? Or would just keep growing indefinitely? Any ideas about what size is considered a limit to evaluate and purge (and how to purge)?…

OPC DA Advise mode

Does OPC DA logger support advise mode?

• Answered

Best Practices for Importing Historical Data from CSV Files

I’m planning to import a large number of CSV files containing historical data into our system. To ensure a smooth process, I’d like to understand the best practices for this import.…

Historian Thread Count Increase and Tag Differences

What are the common causes for an increase in the Historian Thread Count? Understanding these factors will help us manage system performance effectively.…

Display information of data entered/modified in a data table (or other control)

Hello, I have an scenario where an operator may want to override an existing value captured from the process unit (or even add a new value). I'm trying to understand if there is a way to present in a…

• Answered

Expression documentation

I feel like I am missing some documentation....where is the documentation for the Expression editor?

Axiom - Custom Header Text indicating Environment

Hello! Has anybody implemented such customization (if allowed), where Axiom portal displays a text indicating which environment one is connected to? I know, URL's help,…

• Answered

Prevent a user to create charts/applications

Hello, Is there a way to prevent a user to create Axiom reports? I can see there are options to deny access to views (but prevents the user to open reports on views denied) and deny access to Read…

• Answered

Setting file/folder permissions in v24 and above

Hello, I've been looking to define permissions in Axiom folders, but I only found this article from v23. Setting File/Folder Permissions in Axiom (version 23) - General - Canary Community Is this…

• Answered

Canary Admin Timeout

Hello, I have observed that Canary Admin logs you off after "some period" (unable to determine it). Is there a setting that can be configured to logoff Canary Admin users (e.g.…

• Answered

Enable/Disable Users

Hello I am unable to find in documentation or Canary system anything that allows Canary administrators to enable/disable users (by users I refer to Axiom users) - but I may be wrong here!…

Save Application from Script

Is it possible to save and overwrite the existing application from a script? I have a ValueBox tracking the running hours of a piece of equipment (duration in non-zero state from an aggregate start…

OPC DA tag Import

I have a system with 5000 tags and will be connecting Canary to this system via OPC DA. I have exported the Tags from the source and I can/have configured them how I want them to be stored as well as…

Axiom authentication

I'm looking for a way to disable "Active Directory" login on the Axiom web interface(for Internet security), but leave the option available on the server for the "Canary Admin" application.…

• Answered

Siemens S7 collector?

Hello, I 'm looking to connect the Canary collector directly to a Siemens S7 PLC's. Both OPC-DA and OPC-UA are disabled on the PLCs and I prefer not to use a protocol translator such as Kepware.…

Trend Graph displaying only an Event Duration

Hello, I'm new to Canary, so please accept my apologies if this has been already discussed or answered (I could not find anything on this in the help center).…

Exporting Large Volumes of Raw Historian Data Efficiently via Canary API

I'm working on exporting a large amount of raw historian data using the Canary API (/getData2) over a long time range. Due to the tag count limitations per API call,…

Bulk remove Calculations

Is there an easy way to remove multiple Calculations at once? Or is the only way to click delete on each one individually?

• Answered

Most efficient way to export large volumes of data with API

I’m working with a customer who needs about six months of historical data at a 10-second resolution for approximately 1,200 tags. I'm writing a script using continuation to retrieve the data,…

Axiom Panel Visible at certain times and blinking panel

I am making a dashboard and I am wanting to have a panel that is only visible at certain times of the day and then turns invisible outside that period of time.…

MQTT Collector logs only DBIRTH

Hello, I have modified the python script available in tahu-master python-examples-example.py to test the MQTT collector (23.2.1). The broker I am using is mosquitto.…

Canary to other historians?

Hi Canarians, Does canary expose an OPC /OPC UA/ MQTT Publisher to which we can connect from an external interface and write to our non Canary historian? I see the data collectors,…

Calculation Ignoring Backfill to Date

I'm trying to delete all existing calculations, and backfill only to 5/1 but every time the calculations start backfilling from available data range 3/6

Asset-Based Calculations with Output to Multiple Tags

Hi all, I’m working on setting up asset-based calculations in Canary and could use some guidance. My goal: Apply the same 5m calculation (e.g. 5-minute average of Real Power) across multiple assets…