ItpGetCyclicLrealOffsets

The function block ItpGetCyclicLRealOffsets is used to read the current configuration of the cyclic channel interface for LREAL variables.

VAR_INPUT

VAR_INPUT
    bExecute           : BOOL;
    tTimeOut           : TIME;
END_VAR

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

tTimeOut: ADS timeout delay

VAR_IN_OUT
    sNciToPlc           : NCTOPLC_NCICHANNEL_REF;
END_VAR 

VAR_OUTPUT

VAR_OUTPUT
    bBusy              : BOOL;
    bErr               : BOOL;
    nErrId             : UDINT;
    nIndexOffsetParam1 : UDINT;
    nIndexOffsetParam2 : UDINT;
    nIndexOffsetParam3 : UDINT;
    nIndexOffsetParam4 : 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 if 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).

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

See also:

• ItpReadCyclicLRealParam1
• ItpSetCyclicLRealOffsets