FB_SMIParValueReadWord

FB_SMIParValueReadWord 1:

The function block FB_SMIParValueReadWord reads a word parameter (2 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;
  wParValue  : WORD;
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.
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).
wParValue	WORD	The read Word parameter

Requirements

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