ItpSingleBlock

The function block ItpSingleBlock enables or disables single block mode in the NCI. Block relaying can be triggered directly from the PLC with the input 'bTriggerNext'. Alternatively the Start button of the interpreter (F5) can be used in the XAE.

A more detailed description can be found in the Interpreter documentation.

Inputs

VAR_INPUT
    bExecuteModeChange  : BOOL;
    nMode               : E_ItpSingleBlockMode;
    bTriggerNext        : BOOL
    tTimeOut            : TIME;
END_VAR

Name	Type	Description
bExecuteModeChange	BOOL	Single block mode (nMode) is activated through a rising edge at this input.
nMode	E_ItpSingleBlockMode	Operation mode for single block (cf. single block mode): ItpSingleBlockOff: Single block off ItpSingleBlockNck: Single block in NC kernel ItpSingleBlockIntp: Single block in interpreter
bTriggerNext	BOOL	Block relaying is triggered by a rising edge at this input.
tTimeOut	TIME	ADS Timeout-Delay

	ItpSingleBlockIntp is not available when using the GST interpreter.

/ Inputs/Outputs

VAR_IN_OUT
    sNciToPlc           : NCTOPLC_NCICHANNEL_REF;
END_VAR

Name	Type	Description
sNciToPlc	NCTOPLC_NCICHANNEL_REF	The structure of the cyclic channel interface from the NCI to the PLC. This structure is read-only (type: NCTOPLC_NCICHANNEL_REF).

TYPE E_ItpSingleBlockMode:
(
    ItpSingleBlockOff   := 0,
    ItpSingleBlockNck   := 1,
    ItpSingleBlockIntp  := 16#4000
);
END_TYPE

Outputs

VAR_OUTPUT
    bBusy     : BOOL;
    bErr      : BOOL;
    nErrId    : UDINT;
END_VAR

Name	Type	Description
bBusy	BOOL	This output remains TRUE until the function block has executed a command, but at the longest for the duration supplied to the 'Timeout' input. While Busy = TRUE, no new command will be accepted at the inputs. Please note that it is not the execution of the service but its acceptance whose time is monitored.
bErr	BOOL	This output is switched to TRUE as soon as an error occurs during the execution of a command. The command-specific error code is contained in 'nErrId'. Is reset to FALSE by the execution of a command at the inputs.
nErrId	UDINT	Contains the command-specific error code of the most recently executed command. Is reset to 0 by the execution of a command at the inputs. The error numbers in ErrId can be looked up in the ADS error documentation or in the NC error documentation (error codes above 0x4000).

Requirements

Development environment	Target platform	PLC libraries to be linked
TwinCAT v3.1.0	PC or CX (x86 or x64)	Tc2_NCI