FB_PN_IM0_READ
The PROFINET controller uses the function block FB_PN_Im0_READ to read all I&M 0 ( Identification & Maintenance ) data from a device referenced via the input Port.
The frame structure of the I&M0 function corresponds to the index 0xAFF0 according to the PROFINET standard.
Inputs
VAR_INPUT
bStart : BOOL;
NETID : T_AmsNetId;
PORT : T_AmsPort;
END_VARName | 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;
IM_AFF0 : str_IM_0xAFF0;
bError : BOOL;
iErrorID : UDINT;
END_VARName | 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. |
IM_AFF0 | IM_AFF0: Output of the I&M0 frame supplied by the device in a structure. | |
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 |