Set_DO_Data

Overview

The Set_DO_Data function block is used to write output states to a Digital Output (DO) module.

Module_ID           :=  (USINT)
Ch0                 :=  (BOOL)
Ch1                 :=  (BOOL)
Ch2                 :=  (BOOL)
Ch3                 :=  (BOOL)
Ch4                 :=  (BOOL)
Ch5                 :=  (BOOL)
Ch6                 :=  (BOOL)
Ch7                 :=  (BOOL)
STS_Done            =>  (BOOL)
STS_Failed          =>  (BOOL)
STS_Fault_Code      =>  (USINT)

Interface

Inputs

Name	Type	Range / Units	Description
Module_ID	USINT	1 - 15	Unique identifier of the DI module.
Ch0	BOOL	0 / 1	Logical output state for channel 0.
Ch1	BOOL	0 / 1	Logical output state for channel 1.
Ch2	BOOL	0 / 1	Logical output state for channel 2.
Ch3	BOOL	0 / 1	Logical output state for channel 3.
Ch4	BOOL	0 / 1	Logical output state for channel 4.
Ch5	BOOL	0 / 1	Logical output state for channel 5.
Ch6	BOOL	0 / 1	Logical output state for channel 6.
Ch7	BOOL	0 / 1	Logical output state for channel 7.

Outputs

Name	Type	Range / Units	Description
STS_Done	BOOL	0 / 1	TRUE when all DO data has been successfully sent to the module.
STS_Failed	BOOL	0 / 1	TRUE if the DO data write operation failed.
STS_Fault_Code	USINT	#	Diagnostic code indicating the reason for failure.

Fault Codes

Code	Meaning	Description
97	Module Faulted	The DO module reported an internal fault.
98	Module Mismatch	The detected module type does not match the expected DO module.
99	Module Not Found	The specified Module_ID is not part of the current hardware configuration.

Example

PROGRAM PROG_Write_DO
  VAR
    DO_Write : Set_DO_Data;
    TON_Instance : TON;
    Toggle : BOOL := FALSE;
  END_VAR

  TON_Instance(IN := TRUE, PT := T#3s);

  IF TON_Instance.Q THEN
    Toggle := NOT Toggle;
    TON_Instance(IN := FALSE);
  END_IF;

  DO_Write(Module_ID := 3
          ,Ch0 := Toggle);
END_PROGRAM

CONFIGURATION Config0
  RESOURCE PLC ON PLC
    TASK Task_50ms(INTERVAL := T#50ms, PRIORITY := 1);
    PROGRAM Write_DO WITH Task_50ms : PROG_Write_DO;
  END_RESOURCE
END_CONFIGURATION