FB_PN_ReadStateOfDevices

When called, the function block FB_PN_ReadDtateOfDevices returns the number of configured and missing devices and those with diagnosis information.

	PROFINET RT Controller driver version The function block is only available for PROFINET RT Controller driver version v03(v0.21) or higher. In TwinCAT XAE, the driver version can also be found in the PROFINET RT Controller I/O device.

Inputs

VAR_INPUT
  bExecute               : BOOL;
  NETID                  : T_AmsNetIdArr;
END_VAR

Name	Type	Description
bExecute	BOOL	The function block is enabled by a positive edge at this input.
NETID	T_AmsNetId	AMS Net ID of the PROFINET RT controller

Outputs

VAR_OUTPUT
  bBusy                      : BOOL; 
  bError                     : BOOL;
  nErrorID                   : UDINT;
  nDevices                   : UINT;
  PnIoError                  : UINT;
  PnIoDiag                   : UINT
  sControllerDriverVersion   : STRING;
END_VAR

Name	Type	Description
bBusy	BOOL	When the function block is enabled, this output is set and remains set until a feedback is received. While Busy = TRUE, no new command will be accepted at the inputs.
bError	BOOL	If an error occurs during the transmission of the command, this output is set after the bBusy output is reset.
nErrorId	UDINT	Returns an ADS error number if bError output is set.
nDevices	UINT	Number of configured devices.(max.255)
PnIoError	UINT	Number of devices with error state or diagnosis.
PnIoDiag	UINT	Number of devices with diagnosis.
sControllerDriverVersion	UINT	PROFINET controller version 03 (V00.21) or higher required.

Requirements

Development environment	Target platform	PLC libraries to include
TwinCAT v3.1.4024.54	PC or CX (x64, x86, ARM)	Tc2_ProfinetDiag (>= v1.4.1.0)