The import function in the Cloud Logging configurator is, together with the export function, built to easily and effortlessly copy data tags from one device to another. Additionally, you can use the import function to prepare data tags in a CSV file and load them all at once into your cloud logger.

This article explains the structure of the CSV file and the syntax of the corresponding settings. Despite the fact that every protocol is structured in it's own way (i.e. Siemens S7 works with Data Blocks and OPC-UA doesn't) a uniform file structure is applied for all protocols.

CSV file structure

The structure of the CSV file needs to be correct for the import function to work properly. The headers (first row) of column 1-8 should look like this:

The headers of column 9-11, only applicable when setting "log event" to "trigger", should look like this:

Each column represents a different setting and all are explained below. You can easily navigate to the desired section by pressing the corresponding header above.

Tip: an easy template

You can quickly and easily create a template by first creating a single data tag using the StrideLinx Cloud interface and then exporting this data tag to a CSV file, or download an empty template here:.

Identifier

This variable ensures that every data source and variable in the your company remains unique, even when you give multiple variables the same name. An identifier only has to be unique for a certain data-source. Two different data-sources in the same company can have the same identifiers and can therefore import the same CSV-file.

Address

Every data tag needs to be linked to a variable. You do this by entering the address of the concerning variable. The address is fully explained in the "Import variables" article. Below you will find several examples.

Name

You can name the data tags freely. It is advised to enter a very brief description of the variable (i.e. weight, temperature zone #1, emergency stop section B5).

Logging interval

This setting's function depends on what you set as the type of log event:

• Log on interval
• Log on change or on trigger

Log on interval

Log on interval means the variable is logged every X seconds.

This setting determines the logging interval, which can be configured anywhere between 100ms - 1h, using milliseconds, seconds, minutes, or hour. Examples are listed in the table below.

Log on change or on trigger

Log on change means the variable is logged when its value changes, while log on trigger means the variable is logged when a custom trigger happens (view "Configure triggers" for more info).

This setting now determines the maximum amount of logged values per hour. If you have this set to "up to 100 values per hour" and the variable changes/triggers 101 times in an hour, then the 101th time won't be logged. Don't worry, the logging will continue when the next hour begins. All available options are listed in the table below.

Retention policy

The data storage duration is indicated in weeks with four options to choose from. Data older then the retention policy will be deleted from the StrideLinx Cloud completely. The available options are:

Edge aggregator

To have reliable and accurate data the StrideLinx router is constantly requesting the variables' value. The edge aggregator processes this data between logging intervals. There are four formulas to choose from.

On change expiry

When logging on change, you may want to log the value every hour when the value doesn't change as well. If this is the case you have to add 1h to this column, otherwise you can leave the column empty.

Log event

This setting, together with the "logging interval"-setting, determines when the variable will be logged. All options are listed in the table below.

Trigger address

Here you enter the address corresponding with the variable you'd like to use as trigger. For example, when using Modbus and the variable is a holding register with address 7, you enter a 7 here. If you're unsure you can best export an existing trigger first.

Trigger condition

A trigger happens if the outcome of <variable><condition><threshold> is true. For example, if variable "Temperature" is "greater than or equal to" "60" degrees celsius. The available options for the condition are:

Trigger threshold

The threshold is the last part of the equation that determines if a trigger happens or not. The available options depend on the variable's data type. For example, if the variable's data type is boolean, then you can choose either TRUE or FALSE.