FB_EcGetMasterState

VAR_INPUT

VAR_INPUT
    sNetId      : T_AmsNetId;  
    bExecute    : BOOL;
    tTimeout    : TIME := DEFAULT_ADS_TIMEOUT; 
END_VAR

sNetId: This is a string that contains the AMS network identifier of the EtherCAT master device.

bExecute: The block is activated by a rising edge at this input.

tTimeout: Maximum time allowed for the execution of the function block.

VAR_OUTPUT

VAR_OUTPUT
    bBusy       : BOOL;
    bError      : BOOL;
    nErrId      : UDINT;
    state       : WORD; 
END_VAR

bBusy: This output is set when the function block is activated and remains set until an acknowledgement is received.

bError: This output is set up after the bBusy output has been reset if there has been an error in transmission of the command.

nErrId: Supplies the ADS error code associated with the most recently executed command if the bError output is set.

state: EtherCAT state of the master. Following values for state  are possible:

Example of an implementation in ST:

PROGRAM TEST_GetMasterState
VAR
    fbGetMasterState        : FB_EcGetMasterState;
    sNetId          : T_AmsNetId := '172.16.2.131.2.1';
    bExecute            : BOOL;
    state           : WORD;
    bError          : BOOL;
    nErrId          : UDINT;
END_VAR

fbGetMasterState(sNetId:= sNetId, bExecute:=bExecute);
state:=fbGetMasterState.state;
bError:=fbGetMasterState.bError;
nErrId:=fbGetMasterState.nErrId;

Requirements