ItpEStopEx

ItpEStopEx 1:

The function block ItpEStopEx triggers the NCI EStop and enables a controlled stop on the path. The limit values for the deceleration and the jerk are transferred as parameters. If these should be smaller than the currently active dynamic parameters, the transferring parameters are rejected.

ItpEStopEx 2: Inputs

VAR_INPUT
    bExecute       : BOOL;
    fDec           : LREAL;
    fJerk          : LREAL;
    tTimeOut       : TIME;
END_VAR

Name

Type

Description

bExecute

BOOL

The command is triggered by a rising edge at this input.

fDec

LREAL

Max. deceleration during stopping. If fDec is smaller than the currently active deceleration, fDec is rejected. This ensures that the deceleration occurs at least with the standard ramp.

fJerk

LREAL

Max. jerk during stopping. If fJerk is smaller than the currently active jerk, fJerk is rejected.

tTimeOut

TIME

ADS Timeout-Delay

ItpEStopEx 3:/ItpEStopEx 4: 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).

ItpEStopEx 5: 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).

See also ItpStepOnAfterEStopEx.

Requirements

Development environment

Target platform

PLC libraries to be linked

TwinCAT v3.1.0

PC or CX (x86 or x64)

Tc2_NCI