Telecontrol: Configure data points | bluelog Neo

Last modified: 2026-10-30

Note: Beta feature

Telecontrol is currently available as a beta feature

About configuring data points

Data points define the information exchanged between the bluelog and the grid operator. Each data point consists of one or more input value points, one or more output value points, and a calculation formula.

Note: Naming

Use clear and consistent names for data points, input value points, and output value points. Where possible, follow the grid operator's naming conventions. This helps to avoid confusion and prevent configuration errors.

See also our Naming guideline for best practices.

Prerequisites

You have configured an IEC server.
The required devices are installed and available on the bluelog.
Your grid operator has provided you with the specification and list of required data points.

Step 1: Add a data point

Steps

Select the Plus icon to add a data point.
Enter a Data point name.
Enter the IOA address specified by the grid operator.
Select the required Data point type (TI).
- Depending on the selected TI, different fields will appear.
Enter the Signal source/station (ASDU).
- This is the numerical identifier of the station (subsystem). Must be a positive integer value.
Select the Interrogation group specified by the grid operator.
Select the IEC transmission mode.
- Depending on the selected transmission mode, additional fields will appear.

The data point is created.

About IEC transmission mode

IEC transmission mode refers to the conditions under which the data point is transmitted.

Mode	Description
Reactive	The data point is transmitted when a value changes or when another event triggers transmission. Define a hysteresis and its properties.
Cyclic	The data point is transmitted at a fixed interval in ms.

Step 2: Configure input value point definitions

Input value points define the source values used by a data point. An input value point can read values from:

Measurements from connected devices (e.g. meter)
Calculated values from the bluelog PPC interface (e.g. active power setpoint)
Defined context variables. See Telecontrol: Add new server configuration.

You can also use multiple input value points in a formula to calculate values that are not directly available on the bluelog.

Steps

Select the Plus icon to add an input value point.
Enter a Name.
- We recommend using the measurement name so you can easily identify the value point in the next steps.
Select the Device type and Device ID.
Select the Reference value.
- Use one value point per device value or measured value.
Set the behavior of the Active toggle.
- Toggle activated (default): The input value point can be used in a formula.
- Toggle deactivated: The input value point cannot be used in a formula. Disabling unused input value points can reduce communication traffic on RS-485 and Ethernet networks.
Depending on grid operator specifications, configure the timing of the value point.
Select Save.

Repeat these steps for each input value point.

About configuring the timing of a value point

You can delay or modify the switching behavior of an input value point or output value point (=function block behavior). A common example is an Emergency stop. The following behavior is available:

Function block	Description
Switch-on delay (TON)	Set a timer with an on-delay to delay or modify the switching behavior of an output value point.
Switch-off delay (TOF)	Set a timer with an off-delay to deactivate the output after the configured time
Pulse extension (TP)	Set a timer with a pulse to extend a pulse signal to a configured duration.

Step 3: Configure output value point definitions

Output value points can reference:

Digital outputs
Calculated values from the bluelog PPC interface
Internal variables (context variables)

Output value points define how or where a calculated value is used. You can:

Assign a value to another data point
Use the value in another formula
Send the value to the grid operator
Send commands to on-site devices using the bluelog’s digital outputs

Steps

Select the Plus icon to add an output value point.
Enter a Name.
- We recommend using the same naming convention as the associated data point.
Select:
- Device type
- Device ID
- Reference value: Use one value point per measured value.
Set the behavior of the Persistent toggle:

- Toggle activated: Retain the last measured value after a bluelog reboot.

- Toggle deactivated: Do not retain the value after a bluelog reboot.
Set the behavior of the Transfer to device toggle:
- Toggle activated: The value or command is sent to the assigned device. This is typically used for digital outputs that trigger switches or switchgear.
- Toggle deactivated: The value or command is not sent to the assigned device.
Optional: Configure the Timing of the value point.
Select Save.

Repeat these steps for each input value point. In the next step, you can define the formula.

Last updated: October 30, 2026