FB_PN_IM0_READ
Using this function block the PROFINET controller reads all I&M 0 data (Identification & Maintenance) from a device referenced via the Port input.
The frame structure of the I&M0 function corresponds to the index 0xAFF0 according to PROFINET standard.
VAR_INPUT
VAR_INPUT
bStart : BOOL; NETID : T_AmsNetId;(* AMS Net ID from Controller *)
PORT : T_AmsPort; (* Port used by Controller to communicate with Device *)
END_VAR
bStart : The block is activated by a rising edge on this input
NETID : AMS Net ID of the controller
PORT : Port via which the controller communicates with the device (port = Device ID + 1000hex)
VAR_OUTPUT
VAR_OUTPUT
bBusy : BOOL;
IM_AFF0 : str_IM_0xAFF0;
bError : BOOL;
iErrorID : UDINT;
END_VAR
bBusy : When the function block is activated this output is set. It remains set until a feedback is received. While Busy = TRUE, no new command will be accepted at the inputs.
IM_AFF0: Output of the I&M0 frame supplied by the device in a structure. str_IM_0xAFF0.
bError: In the event of an error during the command transfer, this output is set once the bBusy output has been reset.
iErrorID: Supplies an ADS error number when the output bError is set.
Requirements
Development environment | Target platform | PLC libraries to be linked |
|---|---|---|
TwinCAT v2.11.0 R3 | PC or CX (x86, ARM) | TcProfinetDiag.Lib |