PipeNetwork_FFLD - Special FFLD Function

Pipe Network motion icon

Function A function calculates a result according to the current value of its inputs. A function has no internal data and is not linked to declared instances. - Calls the PNCode function block in FFLD "Free Form Ladder Diagram" POUs.

Inputs

Input	Data Type	Range	Unit	Default	Description
En	BOOL	0, 1	N/A	No default	Request to initialize the Pipe Network.
cmdID	DINT	N/A	N/A	No default	Commands used to start and initialize the Pipe Network. MLPN_CREATE_OBJECTS – Create Pipe Network MLPN_POWER_ON – Power on all axes MLPN_POWER_OFF – Power off all axes MLPN_ACTIVATE – Activate the pipes MLPN_CONNECT – Connect the axes to the pipes MLPN_DEACTIVATE – Deactivate the pipes

Input

Data Type

Range

Unit

Default

Description

BOOL

0, 1

N/A

No default

Request to initialize the Pipe Network.

cmdID

DINT

N/A

No default

Commands used to start and initialize the Pipe Network.

MLPN_CREATE_OBJECTS – Create Pipe Network
MLPN_POWER_ON – Power on all axes
MLPN_POWER_OFF – Power off all axes
MLPN_ACTIVATE – Activate the pipes
MLPN_CONNECT – Connect the axes to the pipes
MLPN_DEACTIVATE – Deactivate the pipes

Outputs

Output	Data Type	Range	Unit	Description
OK	BOOL		N/A	Returns TRUE when the function successfully executes.

Remarks

It starts and initializes the Pipe Network, based on the command specified by cmdID.
- Internally this function calls the Function Block A function block groups an algorithm and a set of private data. It has inputs and outputs. PNCode.
This is a special function.
- It should only be used in Pipe Network applications that contain FFLD POUs that call PNCode.
- To use this function, Pipe Network must be declared as a global variable in the dictionary.
Calling this function instead of PNCode in FFLD POUs eliminates this compile error that occurs after modifying the Pipe Network using the Pipe Network editor:

Controller:PLC "Programmable Logic Controller"
A Programmable Logic Controller, PLC, or Programmable Controller is a digital computer used for automation of industrial processes, such as control of machinery on factory assembly lines.
Used to synchronize the flow of inputs from (physical) sensors and events with the flow of outputs to actuators and events:Main: NW1(1,14): PNCode: Invalid block height

The compile error is generated because the number of outputs on PNCode can vary.
- This occurs after modifying the original Pipe Network using the Pipe Network editor.
The new PNCode Function Block is not automatically updated in any FFLD POUs, reflecting the new outputs.
- Manually update each PNCode function block call in any FFLD POUs to correct this problem.

The Pipe Network FFLD Application Template is a good example of how to use this Function.
See Pipe Network 2-Axes Template - FFLD.

Figure 6-112: PipeNetwork_FFLD

FBD Language Example

Not available.

FFLD Language Example

IL Language Example

Not available.

ST Language Example

Not available.