Equipments (Devices) > SSW900 > Ladder > Data Transfer

Block that generates an alarm or fault with the number programmed by the user.

Ladder Representation

USERERR2_block

Block Structure

Variable Type	Name	Data Type	Description
VAR_INPUT	EN	BOOL	Block enabling
	CODE	WORD UINT	Error code generated (750 - 799)
	TYPE	BYTE	Error type generated (0 - Alarm) (1 - Fault)
VAR_OUTPUT	ENO	BOOL	Success in the generation of error
VAR	USERERR_INST_0	USERERR	Instance of access to block structure

Operation

When this block has a TRUE value in EN, it generates an alarm or equipment failure, depending on the type defined in TYPE with CODE code.

The value of ENO informs if the generation of alarm or fault has been executed successfully.

Block Flowchart

USERERR_flowchart

Example in Ladder

USERERR2_example01

The above example, when identifying TRUE level in DI1, generates a fault with the code 774 and sets the DO1 output.

Example in ST

The example below displays the instructions for applying the example above in the ST language.

VAR

USERERR_INST_0 : FB_USERERR;

END_VAR

DO1 := USERERR_INST_0(EN:=DI1, CODE:=974, TYPE:=1);