TCP/PLC server directly accepts TCP connection from the external client. The external software (client) communicates with the server over TCP-IP using a set of  specified commands (API). In contrast to the Modbus server – TCP/PLC server has a much looser integration: client can send a “start measurement” command and measurement continuous until stopped. Typically, measurements are done and results are send as fast as possible. There is, also, a proprties file that allows to configure the time between the measurement and different adpative filtering options. Results can be senfd in analog form (via DAC) to a PLC receiver or in digital form to a TCP server. In both case, it uses a data streaming interface that allows fastest measurement rate. The main drawback of the TCP/PLC server is that exact timing pof the measurements cannot be controlled. The main adavmtage is the fast rate of measurement.

This integration option geared toward continuous measurement, where control and timing of individual measurements is not required. TCP/PLC server has three main processes: Measurement, Calculation (Data analysis) and, finally, a Data sender. These processes are loosely integrated and exchange data through the buffers. These processes are monitored to prevent overflow of the buffers. If measurement data starts to grow and calculation process cannot catch up – measurement speed is throttled.