ItpSetCyclicLrealOffsets

The function block ItpSetCyclicLrealOffsets is used to describe the cyclic channel interface for the 4 freely configurable LREAL variables. Variables (index offsets) can be selected from the group state.

The functionality is only active if nIndexOffsetParam1 is not equal 0.

VAR_INPUT

VAR_INPUT
    bExecute           : BOOL;
    tTimeOut           : TIME;
    nIndexOffsetParam1 : UDINT;
    nIndexOffsetParam2 : UDINT;
    nIndexOffsetParam3 : UDINT;
    nIndexOffsetParam4 : UDINT;
END_VAR

bExecute: the command is executed by a rising edge at this input.

tTimeOut: ADS timeout delay

nIndexOffsetParam1: group state (index offset) for parameter 1

nIndexOffsetParam2: group state (index offset) for parameter 2

nIndexOffsetParam3: group state (index offset) for parameter 3

nIndexOffsetParam4: group state (index offset) for parameter 4

VAR_IN_OUT

VAR_IN_OUT
    sNciToPlc           : NCTOPLC_NCICHANNEL_REF;
END_VAR

sNciToPlc: The structure of the cyclic channel interface from the NCI to the PLC. This structure is only accessed for reading. (type: NCTOPLC_NCICHANNEL_REF)

VAR_OUTPUT

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

bBusy: 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: 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: 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).

See also:

Requirements

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