FB_SMIParValueReadDWord

FB_SMIParValueReadDWord 1:

The function block FB_SMIParValueReadDWord reads a DWord parameter (4 bytes) stored on the motor side. The meaning of the individual parameters is manufacturer-specific.

Inputs

VAR_INPUT
  bStart           : BOOL;
  dwAddr           : DWORD := 0;
  eAddrType        : E_SMIAddrType := eSMIAddrTypeAddress;
  dwAddrOption     : DWORD := 0;
  eCommandPriority : E_SMICommandPriority := eSMICommandPriorityMiddle;
  wParAddr         : WORD := 0;
END_VAR

Name	Type	Description
bStart	BOOL	The function block is activated and the command is sent by applying a positive edge to this input.
dwAddr	DWORD	Manufacturer code (0-15), address of a device (0-15), bit field (16 bits) for group addressing or slave ID (32-bit key ID). This input has no meaning if a broadcast is sent.
eAddrType	E_SMIAddrType	Specifies whether the input dwAddr is to be evaluated as manufacturer code, address of a device or for group addressing. Addressing via slave ID (eAddrType = eSMIAddrTypeSlaveId) is not permitted.
dwAddrOption	DWORD	Reserved for future extensions
eCommandPriority	E_SMICommandPriority	Priority (high, medium or low) with which the command is processed by the PLC library.
wParAddr	WORD	Address of the parameter (0-4095) to be read.

Inputs/outputs

VAR_IN_OUT
  stCommandBuffer : ST_SMICommandBuffer;
END_VAR

Name	Type	Description
stCommandBuffer	ST_SMICommandBuffer	Reference to the structure for communication (buffer) with the function block FB_KL6831KL6841Communication()

Outputs

VAR_OUTPUT
  bBusy      : BOOL;
  bError     : BOOL;
  udiErrorId : UDINT;
  dwParValue : DWORD;
END_VAR

Name	Type	Description
bBusy	BOOL	This output is set as soon as the function block processes a command and remains active until the command has been processed. For some errors (e.g. faulty parameters), bError is set immediately after the positive edge at bStart without bBusy switching to TRUE.
bError	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 udiErrorId. The output is reset to FALSE by the reactivation of the function block via the input bStart.
udiErrorId	UDINT	Contains the command-specific error code of the most recently executed command. It is reset to 0 by the reactivation of the function block via the input bStart (see error codes).
dwParValue	DWORD	The read DWord parameter

Requirements

Development Environment	PLC library to include
TwinCAT from v3.1.4020.14	Tc2_SMI from 3.3.5.0