MSG_CIPSYMBOLIC (common industrial protocol symbolic message)

The MSG_CIPSYMBOLIC instruction sends a common industrial protocol (CIP) symbolic message over an Ethernet channel or a serial port.

Languages supported: Function block diagram, ladder diagram, structured text.

This instruction applies to the L20E, L50E, and L70E controllers.

MSG_CIPSYMBOLIC operation

When the function block is enabled, the receive buffers for the Read operations are cleared on the rising edge of Enable.

MSG_CIPSYMBOLIC parameters
Parameter	Parameter Type	Data Type	Description
IN	Input	BOOL	Rung input state. TRUE: Rising edge detected, start the instruction block with the precondition that the last operation has been completed. FALSE: Rising edge not detected, idle.
CtrlCfg	Input	CIPCONTROLCFG	The instruction block execution control configuration. Use the CIPCONTROLCFG parameters to define CtrlCfg.
SymbolicCfg	Input	CIPSYMBOLICCFG	Information for the symbol for Read and Write.
TargetCfg	Input	CIPTARGETCFG	Target device configuration. Use the CIPTARGETCFG parameters to define TargetCfg.
Data	Input	USINT[1..1]	Read command stores the data returned from the server. Write command buffers the data to be sent to the server. When an MSG is triggered or re-triggered, Data is cleared for the MSG Read command.
Q	Output	BOOL	Outputs of this instruction are updated asynchronously from the program scan. Output Q cannot be used to re-trigger the instruction because IN is edge triggered. TRUE: MSG instruction finished successfully. FALSE: MSG instruction is not finished.
Status	Output	CIPSTATUS	Function block execution status When an MSG is triggered, or re-triggered, all elements inside Status are reset. The Status output is defined in CIPSTATUS data type.
DataLength	Output	UINT	Number of data bytes for Read service. For Write service, it's 0. When an MSG is triggered or re-triggered, DataLength is reset to 0 for MSG Read command.

Provide Feedback

Have questions or feedback about this documentation? Please submit your feedback here.