Equipments (Devices) > SCA06 > Ladder > Data Transfer

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

Ladder Representation

USERERR_block

Block Structure

Variable Type	Name	Data Type	Description
VAR_INPUT	EN	BOOL	Block enabling
	CODE	WORD UINT	Error code generated (950 - 999)
	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

NOTE!

(*) USERERR_INST_0 instance must be configurated to SCA06 and LDW900.

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

USERERR_example01

The above example, when identifying TRUE level in DI1, generates a fault with the code 974 and sets the DO1 output.

USERERR table configuration

On devices that have text-based HMI, messages can be configured through an editor. To access the editor, right click on the USERERR block and select the "Edit USERERR Table" option.

USERERR_editor01

The texts configured in the table will be displayed on the HMI when the block USERERR is enabled.

USERERR_editor02

After editing the table, select the argument CODE of the block equal to the CODE column of the table.

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);