A path planner reads a file containing a path. This file must contain several lines of setpoints for position, velocity, acceleration and jerk.

//time          //jerk          //acceleration  //velocity      //position
8.0000000e-02   0.0000000e+00   0.0000000e+00   0.0000000e+00   0.0000000e+00
2.4000000e-01   1.0000000e+04   0.0000000e+00   0.0000000e+00   0.0000000e+00
8.0000000e-02   0.0000000e+00   2.4000000e+03   2.8800000e+02   2.3040000e+01
2.4000000e-01  -1.0000000e+04   2.4000000e+03   4.8000000e+02   5.3760000e+01

A path planner block has four output signals - jerk, acceleration, velocity, and position.

As soon as a client connects to a socket server a connection is up and running until either one of them stops. It is possible to stop the server or the client and restart it subsequently. In both cases a new connection will be established.
As long as the connection is not yet open the SocketData block will have output values being zero. As soon as the connection is broken the block will set its output values back to zero.