FB_EcGetSlaveCrcError

FB_EcGetSlaveCrcError 1:

The function block FB_EcGetSlaveCrcError allows the CRC error counters of the individual ports (A, B and C) of a slave to be read. If the call is successful, the output variable crcError, whose type is ST_EcCrcError, contains the requested CRC error counter.

The function block FB_EcGetSlaveCrcError can only be used with slaves with up to 3 ports (e.g. EK1100). The function block FB_EcGetSlaveCrcErrorEx can also be used with slaves with up to 4 ports (e.g. EK1122).

Inputs

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

Name	Type	Description
sNetId	T_AmsNetId	String containing the AMS network ID of the EtherCAT master device. (Type: T_AmsNetId)
nSlaveAddr	UINT	Fixed address of the EtherCAT slave whose CRC error counter is to be read.
bExecute	BOOL	The function block is activated by a positive edge at this input.
tTimeout	TIME	Maximum time allowed for the execution of the function block.

Outputs

VAR_OUTPUT
    bBusy    : BOOL;
    bError   : BOOL;
    nErrId   : UDINT;
    crcError : ST_EcCrcError; 
END_VAR

Name	Type	Description
bBusy	BOOL	This output is set when the function block is activated, and remains set until a feedback is received.
bError	BOOL	This output is set after the bBusy output has been reset when an error occurs in the transmission of the command.
nErrId	UDINT	Supplies the ADS error code associated with the most recently executed command if the bError output is set.
crcError	ST_EcCrcError	CRC error counters for the individual ports

Example of an implementation in ST:

PROGRAM TEST_GetSlaveCrcError
VAR
    fbGetSlaveCrcError : FB_EcGetSlaveCrcError;
    sNetId : T_AmsNetId := '172.16.2.131.2.1';
    bExecute : BOOL;
    crcError : ST_EcCrcError;
    nSlaveAddr : UINT := 1001;
    bError : BOOL;
    nErrId : UDINT;
END_VAR

fbGetSlaveCrcError(sNetId:= sNetId, nSlaveAddr:= nSlaveAddr, bExecute:=bExecute);
crcError := fbGetSlaveCrcError.crcError;
bError := fbGetSlaveCrcError.bError;
nErrId := fbGetSlaveCrcError.nErrId;

Requirements

Development environment	Target platform	PLC libraries to include
TwinCAT v3.1.0	PC or CX (x86, x64, ARM)	Tc2_EtherCAT