TC ADS Async Read

The block "TC ADS Async Read" provides read access to TwinCAT ADS varaibles. You can find this block beneath the subfolder "Asynchronous" of the Beckhoff ADS Library inside the "Simulink Library Browser".

TC ADS Async Read 1:

Block input ports

NetId	The target AMS NetId
Port	The target ADS Port
IdxGrp	The target ADS Index Group
IdxOffs	The target ADS Index Offset
Trig	Positive edge triggers the ADS request

Block output ports

Data	The value, read from the ADS variable
Busy	Boolean flag signaling that the block is currently waiting for an ADS response
Err	Boolean flag signaling an actual ADS error
ErrId	The ADS error code

Block parameters

TC ADS Async Read 2:

Block sample time	The Simulink block sample time, which is the ADS request interval (refered to the Simulink time but not to the real time)
Abort simulation on ADS error	Stop simulation at the first ADS error
Data type	The data type of the Data output signal, which should be the data type of the transmitted ADS variable
Data width	The width of the Data output signal. Use values greater than 1 to transmit arrays.
ADS timeout	Simulink will wait on a response of the last ADS request until this timespan is exceeded (in each time step)
Direct feed through	Evaluate the input values in the output method of the block. This ensures, that the values at the output ports in the current time step belong to the ADS parameters at the input ports of the same time step. Otherwise the output values belong to the input ADS parameters of the previous time step. Activating this option can significantly slow down the simulation.
Create signal labels	Signal labels are created for the signal lines, connected to the output ports

Code generation

Code generation is supported only for the TwinCAT Target.