Left Tee Pipe

This widget belongs to the Traditional SCADA fluid system bundle — a collection of pipe segments, fittings, valves, pumps, and gauges designed for building fluid system diagrams on ThingsBoard dashboards. It connects to a device and reflects real-time fluid state through its SCADA symbol.

• Control fluid presence, flow state, and direction independently for each arm.
• Animate fluid flow per arm at configurable speed.
• Indicate leak conditions at the junction.
• Apply custom fluid colors per arm.
• Receive state data from device attributes, time series, alarm status, or dashboard state.

The widget connects to a single data source: either a Device or an Entity alias that resolves to a device. This device provides the telemetry or attribute values used to drive the widget’s visual state.

The SCADA symbol defines the visual shape of the widget. Each junction pipe widget has a pre-selected symbol from the Traditional SCADA fluid system bundle. To use a different symbol, click Browse SCADA symbol from gallery and choose one from the library, or upload your own.

Behavior parameters are organized by pipe arm. Each arm is configured independently, allowing different fluid state data sources for each direction. Each parameter supports the same set of actions — see Behavior configuration for the full list.

Parameter	Default	Description
Fluid presence	Absent	Whether fluid is present in the left arm.
Flow presence	Absent	Whether fluid is flowing in the left arm.
Flow direction	Forward	Direction of the fluid flow animation in the left arm.
Flow animation speed	1	Animation speed. 1 is normal speed, 0 disables animation, negative values reverse it.

Parameter	Default	Description
Fluid presence	Absent	Whether fluid is present in the top arm.
Flow presence	Absent	Whether fluid is flowing in the top arm.
Flow direction	Forward	Direction of the fluid flow animation in the top arm.
Flow animation speed	1	Animation speed. 1 is normal speed, 0 disables animation, negative values reverse it.

Parameter	Default	Description
Fluid presence	Absent	Whether fluid is present in the bottom arm.
Flow presence	Absent	Whether fluid is flowing in the bottom arm.
Flow direction	Forward	Direction of the fluid flow animation in the bottom arm.
Flow animation speed	1	Animation speed. 1 is normal speed, 0 disables animation, negative values reverse it.

Parameter	Default	Description
Leak	False	Whether a leak is present at the junction.

To configure a parameter, click its edit icon. The same actions are available for all parameters across all arms. When Action is set to Do nothing, the Value options depend on which parameter you are configuring:

Parameter	Value options
Fluid presence	Present or Absent
Flow presence	Present or Absent
Flow direction	Forward or Reverse
Flow animation speed	Any number — 1 for normal speed, 0 to stop, < 1 - slower animation, > 1 - faster animation
Leak	True or False

For all other actions, the configuration dialog works the same way regardless of which parameter you are editing:

• Execute RPC

  Read the parameter value from an RPC response.

  Parameter	Description
  Method	RPC method to call, like getState or getFlowStatus.
  Action result converter	None — parameter is activated when the result matches the value you specify; Function — parameter is activated when your f(data) returns true.
  ’[parameter]’ when result is	The value or condition that activates this parameter.
  RPC request timeout (ms)	How long to wait for a device response before timing out (Advanced settings).
  RPC request persistent	Stores and retries the command until the device comes online (Advanced settings).

• Get attribute

  Read the parameter value from a device attribute.

  Parameter	Description
  Attribute scope	Where the attribute is stored: Any, Client, Server, or Shared.
  Attribute key	Attribute name to read, like state or flowActive.
  Action result converter	None — parameter is activated when the attribute equals the value you specify; Function — parameter is activated when your f(data) returns true.
  ’[parameter]’ when result is	The value or condition that activates this parameter.

• Get time series

  Read the parameter value from the latest telemetry reading.

  Parameter	Description
  Time series key	Telemetry key to monitor, like flowState or leakSensor.
  Action result converter	None — parameter is activated when the telemetry value equals what you specify; Function — parameter is activated when your f(data) returns true.
  ’[parameter]’ when result is	The value or condition that activates this parameter.

• Get alarm status

  Activate the parameter when a specific alarm is active on the device.

  Parameter	Description
  Alarm severity	Which severity levels trigger the active state: Critical, Major, Minor, Warning, or Indeterminate.
  Alarm types	Any alarm, or a specific alarm type.

• Get dashboard state id

  Activate the parameter based on which dashboard state is currently open.

  Parameter	Description
  Action result converter	None — parameter is activated when the state name matches the text you enter; Function — parameter is activated when your f(data) returns true.
  ’[parameter]’ when result is	The state name or condition that activates this parameter.

• Get dashboard state object

  Activate the parameter using the full dashboard state context; use this when you need to evaluate multiple state parameters at once.

  Parameter	Description
  Parse value function	Write a f(data) function that returns true to activate this parameter.

The Appearance section controls the widget title and per-arm fluid colors.

Setting	Description
Title	Widget title displayed in the header. Supports entityName and entityLabel variables.
Card icon	Icon shown in the widget header. Configure its size and color.
Left fluid color	Color of the fluid in the left arm.
Top fluid color	Color of the fluid in the top arm.
Bottom fluid color	Color of the fluid in the bottom arm.
Pipe color	Color of the pipe structure itself.

The Card appearance section controls the widget container style.

Setting	Default	Description
Background	Transparent	Card background color.
Show card buttons	Fullscreen	Buttons shown on the card when hovered.
Card border radius	0px	Rounding of card corners.
Card padding	12px	Inner spacing between the card edge and widget content.

One or more arms show no fluid state or incorrect state

Cause	Solution
Action is set to Do nothing for that arm	Open the arm’s parameter edit dialog, set the correct Action, and specify the attribute or time-series key.
Attribute or telemetry key mismatch	Verify that the key name matches exactly what the device reports.
Target device is not connected	Confirm that the selected device is online and actively sending data.

Flow animation does not play on an arm

Cause	Solution
Flow animation speed is 0	Set a non-zero value (e.g. 1 for normal speed).
Flow presence is Absent	Configure Flow presence to read from the device and verify the device reports an active flow state for that arm.

These widgets are used in the following ready-made solution templates built on the Traditional SCADA fluid system bundle:

• SCADA Swimming pool — a complete swimming pool monitoring dashboard built with pipe, pump, valve, and gauge widgets from the Traditional SCADA fluid system bundle.