SCIT_StartDataTransfer
The SCIT_StartDataTransfer function block is used as an auxiliary function block to carry out a Start_Data_Transfer on the Interbus card, which is addressed with the NETID and the PORT. A Start_Data_Transfer places the card into the RUN state.
Inputs
VAR_INPUT
NETID : T_AmsNetId;
PORT : T_AmsPort;
WRTRD : BOOL;
TMOUT : TIME := DEFAULT_ADS_TIMEOUT;
END_VARName | Type | Description |
|---|---|---|
NETID | T_AmsNetId | The network address of the computer in which the card is installed can be entered here. If the card is on the same system, an empty string can also be specified. |
PORT | T_AmsPort | Contains the ADS port number of the card assigned by the TwinCAT system. |
WRTRD | BOOL | The function block is enabled by a positive edge at this value. |
TMOUT | TIME | Maximum time allowed for the execution of the command. |
Outputs
VAR_INPUT
BUSY : BOOL;
ERR : BOOL;
ERRID : UDINT;
RESULT : WORD;
ADDERRINFO : WORD;
END_VARName | Type | Description |
|---|---|---|
BUSY | BOOL | When the function block is enabled, this output is set and remains set until a feedback is received. |
ERR | BOOL | If an error should occur during the transfer of the command, then this output is set once the BUSY output was reset. |
ERRID | UDINT | Returns the ADS error number when the ERR output is set. |
RESULT | WORD | Returns the result from the card (assuming an error-free ADS transport (ERR = FALSE)). RESULT = 0 identifies successful execution of the command. A value other than 0 contains the error number from the Phoenix card. |
ADDERRORINFO | WORD | Contains additional error information in the event of a negative feedback from the card (see Phoenix card command description). |
Requirements
|
Development environment |
Target platform |
IO Hardware |
PLC libraries to be integrated (category group) |
|---|---|---|---|
|
TwinCAT v3.1.0 |
None. This functionality is not supported by TwinCAT 3 at present! |
Phoenix: IBS SC/I-T; IBS SC/RI/RT-LK |
Tc2_IoFunctions (IO) |