FB_PN_IM4_Read

The PROFINET controller uses the function block FB_PN_IM4_READ to read all I&M4 (Identification & Maintenance) data from a device referenced via the input Port.
The frame structure of the I&M4 function corresponds to the index 0xAFF4 according to the PROFINET standard.

Inputs

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

Name	Type	Description
bStart	BOOL	The function block is enabled by a positive edge at this input.
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;
  st_IM_Signatur          : STRING(54);
  bError                  : BOOL;
  iErrorID                : UDINT;
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.
st_IM_Signatur	STRING	Returns the vendor signature stored for the device.
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.

Requirements

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