PRTG Manual: OPC UA Custom Sensor

The OPC UA Custom sensor monitors up to ten numeric values returned by specific OPC Unified Architecture (OPC UA) node IDs.

OPC UA Custom Sensor

OPC UA Custom Sensor

i_square_cyanFor a detailed list and descriptions of the channels that this sensor can show, see section Channel List.

Sensor in Other Languages

  • Dutch: OPC UA Custom
  • French: OPC UA Custom
  • German: OPC UA Custom
  • Japanese: OPC UA Custom
  • Portuguese: OPC UA Custom
  • Russian: OPC UA Custom
  • Simplified Chinese: OPC UA Custom
  • Spanish: OPC UA Custom

Remarks

  • This sensor requires a valid port for the connection to the OPC UA server. Enter the port and, depending on the configuration, further credentials in the credentials for OPC UA section in the settings of the parent device.
  • This sensor supports the IPv6 protocol.
  • This sensor has a low performance impact.
  • This sensor uses lookups to determine the status values of one or more channels. This means that possible states are defined in a lookup file. You can change the behavior of a channel by editing the lookup file that the channel uses. For details, see section Define Lookups.
  • See the Knowledge Base: Which OPC UA data types does the OPC UA Custom sensor support?

Add Sensor

The Add Sensor dialog appears when you manually add a new sensor to a device. It only shows the settings that are required to create the sensor. You can change nearly all settings on the sensor's Settings tab after creation.

OPC UA Specific

Setting

Description

Channel #1 – #10 Naming Method

Select the naming method for the channels of the sensor. Choose between:

  • Use automatic naming (default): The sensor uses the name provided by the OPC UA node.
    i_round_redYou cannot use automatic naming after you created the sensor.
  • Enter custom name: Enter a custom name in field Channel #1 - #10 Name.

i_round_blueAfter sensor creation, you can change the name of the channel in the channel settings under Name.

Channel #1 - #10 Unit

Enter the unit for the numeric value that this sensor monitors.

i_round_blueAfter sensor creation, you can change the unit in the channel settings under Unit.

Channel #1 – #10 Node ID

Enter the node ID from which you want to receive numeric data.

i_round_blueA node ID looks like this, for example: ns=1;i=1234 or ns=2;s=test_one. The sensor supports string identifiers and numeric identifiers.

i_round_bluePRTG shows this value for reference purposes only. If you need to change this value, add the sensor anew.

Channel #2 - #10

You can define up to 10 channels. You must define at least one data channel, so you see all available settings for Channel #1. Specify how to handle all other possible channels:

  • Disable: Do not create this channel.
  • Enable: Create this channel. Specify name, unit, and node ID for this channel below.

i_round_blueIt is not possible to enable or disable channels after sensor creation.

i_round_blueUsually, a sensor connects to the IP Address/DNS Name of the parent device. See the device settings for details. For some sensors, you can explicitly define the monitoring target in the sensor settings.

Basic Sensor Settings

Click the Settings tab of a sensor to change its settings.

Basic Sensor Settings

Basic Sensor Settings

Setting

Description

Sensor Name

Enter a name to identify the sensor.

Parent Tags

Shows tags that the sensor inherits from its parent device, parent group, and parent probe.

i_round_blueThis setting is for your information only. You cannot change it.

Tags

Enter one or more tags. Confirm each tag with the Spacebar key, a comma, or the Enter key. You can use tags to group objects and use tag-filtered views later on. Tags are not case-sensitive. Tags are automatically inherited.

i_round_blueIt is not possible to enter tags with a leading plus (+) or minus (-) sign, nor tags with parentheses (()) or angle brackets (<>).

i_round_blueFor performance reasons, it can take some minutes until you can filter for new tags that you added.

The sensor has the following default tags that are automatically predefined in the sensor's settings when you add the sensor:

  • opcua
  • opcuacustom

Priority

Select a priority for the sensor. This setting determines the position of the sensor in lists. The highest priority is at the top of a list. Choose from the lowest priority (i_priority_1) to the highest priority (i_priority_5).

OPC UA Specific

OPC UA Specific

OPC UA Specific

Setting

Description

Sensor Message Node ID

Optionally enter the node ID from which you want to receive a string that the sensor shows as sensor message.

i_round_blueA node ID looks like this, for example: ns=1;i=1234 or ns=2;s=test_one. The sensor supports string identifiers and numeric identifiers.

i_round_blueThe sensor only shows the received string if the sensor is in the Up status. If the sensor enters the Down status, the sensor message shows the error message instead.

Channel #x Node ID

Shows the node ID from which the sensor receives numeric data.

i_round_bluePRTG shows this value for reference purposes only. If you need to change this value, add the sensor anew.

Sensor Display

Sensor Display

Sensor Display

Setting

Description

Primary Channel

Select a channel from the list to define it as the primary channel. In the device tree, the last value of the primary channel is always displayed below the sensor's name. The available options depend on what channels are available for this sensor.

i_round_blueYou can set a different primary channel later by clicking b_channel_primary below a channel gauge on the sensor's Overview tab.

Graph Type

Define how different channels are shown for this sensor:

  • Show channels independently (default): Show a graph for each channel.
  • Stack channels on top of each other: Stack channels on top of each other to create a multi-channel graph. This generates a graph that visualizes the different components of your total traffic.
    i_round_redYou cannot use this option in combination with manual Vertical Axis Scaling (available in the channel settings).

Stack Unit

This setting is only visible if you enable Stack channels on top of each other as Graph Type. Select a unit from the list. All channels with this unit are stacked on top of each other. By default, you cannot exclude single channels from stacking if they use the selected unit. However, there is an advanced procedure to do so.

Debug Options

Debug Options

Debug Options

Setting

Description

Result Handling

Define what PRTG does with the sensor result:

  • Discard result: Do not store the sensor result.
  • Store result: Store the last sensor result in the \Logs\sensors subfolder of the PRTG data directory on the probe system. The file name is Result of Sensor [ID].log. This setting is for debugging purposes. PRTG overwrites this file with each scanning interval.

i_podThis option is not available when the sensor runs on the hosted probe of a PRTG Hosted Monitor instance.

i_round_blueIn a cluster, PRTG stores the result in the PRTG data directory of the master node.

Inherited Settings

By default, all of these settings are inherited from objects that are higher in the hierarchy. We recommend that you change them centrally in the root group settings if necessary. To change a setting for this object only, click b_inherited_enabled under the corresponding setting name to disable the inheritance and to display its options.

i_square_cyanFor more information, see section Inheritance of Settings.

Scanning Interval

i_round_blueThe minimum scanning interval of this sensor is 30 seconds.

Scanning Interval

Scanning Interval

i_square_cyanFor more information, see section Root Group Settings, section Scanning Interval.

Schedules, Dependencies, and Maintenance Window

i_round_blueYou cannot interrupt the inheritance for schedules, dependencies, and maintenance windows. The corresponding settings from the parent objects are always active. However, you can define additional schedules, dependencies, and maintenance windows. They are active at the same time as the parent objects' settings.

Schedules, Dependencies, and Maintenance Window

Schedules, Dependencies, and Maintenance Window

i_square_cyanFor more information, see section Root Group Settings, section Schedules, Dependencies, and Maintenance Window.

Access Rights

Access Rights

Access Rights

i_square_cyanFor more information, see section Root Group Settings, section Access Rights.

Channel Unit Configuration

i_round_blueWhich channel units are available depends on the sensor type and the available parameters. If no configurable channels are available, this field shows No configurable channels.

Channel Unit Configuration

Channel Unit Configuration

i_square_cyanFor more information, see section Root Group Settings, section Channel Unit Configuration.

Channel List

i_round_blueWhich channels the sensor actually shows might depend on the target device, the available components, and the sensor setup.

Channel

Description

Downtime

In the channel table on the Overview tab, this channel never shows any values. PRTG uses this channel in graphs and reports to show the amount of time in which the sensor was in the Down status in percent.

[Value]

The returned numeric values in up to ten channels

More

i_square_blueKnowledge Base

Which OPC UA data types does the OPC UA Custom sensor support?

What security features does PRTG include?