udpSendToVar

Description

This function sends the contents of a local variable to another controller. This allows for the exchange of data across controllers.

Limitations:
- FunctionA 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. block instance variable types are not supported.
- The following types of variables cannot be sent or received:
  - Variables defined with a UDFB"User Defined Function Block" UDFB can be used as a sub-function block in another program of the application. It is described using FBD, LD, ST or IL language. Input / output parameters of a UDFB (as well as private variables) are declared in the variable editor as local variables of the UDFB.
  - The Input and Output variables defined for a sub-program.
- udpSendToVar and udpRcvFromVar will not automatically swap bytes for big vs. little endian systems.
- Send / receive between a Simulator and PDMM/PCMM is not supported.
- 3rd party stand-alone programs on x86 platforms are responsible for endian conversions for UDP telegrams from a PDMM/PCMM.

En	Description	Execute the function
	Data type	BOOL
	Range	[0,1]
	Unit	n/a
	Default	—
sock	Description	Socket number, return value from udpCreate
	Data type	DINT
	Range	[0,+65535]
	Unit	n/a
	Default	—
add[]	Description	Array which contains information about the sender (server) of information. This includes the sender's IP address.
	Data type	USINT
	Range	[0,32]
	Unit	n/a
	Default	—
varName	Description	The name of a variable (or array or structure) to send to the receiver. The variable should be the same type as what is expected by the receiver. See udpRcvFromVar.
	Data type
	Range
	Unit	n/a
	Default	—

OK	Description	Returns true when the function successfully executes. See Function - General rules.
	Data type	BOOL
	Unit	n/a

udpSendToVar( Socket_Number, Add, MyUDPVar )