FB_PN_ALARM_DIAG

The function block FB_PN_ALARM_DIAG can be used to read out diagnosis alarms. Each instance of this function block provides a PLC input ("PnIoBoxDiag"). This input must be linked to the "PnIoBoxDiag" input of the device to be evaluated. Once the diagnosis alarms/warnings have been successfully read, the alarm state of the device is reset. The function block must be called once for each PROFINET device. A run index (iNrAlarms) indicates how many diagnosis alarms have been read from the buffer.

Inputs

VAR_INPUT
  bEnable : BOOL;
  NETID   : T_AmsNetId;
  PORT    : T_AmsPort;
END_VAR

Name	Type	Description
bEnable	BOOL	Enabling the function block.
NETID	T_AmsNetId	AMS Net ID of the controller
PORT	T_AmsPort	Port via which the controller communicates with the device (port = Device ID + 1000hex).

Outputs

VAR_OUTPUT
  bBusy                   : BOOL;
  stAlarmDiagData         : ST_PN_AlarmDiagData;
  bError                  : BOOL;
  iErrorID                : UDINT;
  iNrAlarms               : INT;
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.
stAlarmDiagData	ST_PN_AlarmDiagData	Diagnostic messages are output via this structure. An alarm is output via the structure in each cycle as long as the status bit [0x0010 = at least one AlarmCR got a diagnosis alarm] is present at the PLC input.
bError	BOOL	If an error occurs during the transmission of the command, this output is set after the bBusy output is reset.
iErrorID	UDINT	Returns an ADS error number if bError output is set.
iNrAlarms	INT	Number of alarms last read.

VAR

VAR
      PnIoBoxDiag AT %I* : WORD; (*Hardware Input*)
END_VAR

Name	Type	Description
PnIoBoxDiag	WORD	Hardware input. This variable must be linked to the PROFINET device. A change in the state of this variable informs the PLC program that new alarm diagnoses are pending in the linked PROFINET device.

Requirements

Development environment	Target platform	PLC libraries to include
TwinCAT v3.1.4018	PC or CX (x64, x86, ARM)	Tc2_ProfinetDiag