PROGRAMMABLE LOGIC CONTROLLER PROTOCOL CONVERTER Russian patent published in 2013 - IPC G05B19/418 

FIELD: information technology.

SUBSTANCE: programmable logic controller (PLC) protocol converter allows a supervisory control and data acquisition (SCADA) system to effectively communicate with a PLC using a desired communication protocol, particularly in cases where the PLC does not support the desired communications protocol. A first process may be configured to continually read PLC addresses, one at a time, using a communication protocol supported by the PLC. The first process may store the data values in the shared data array within program memory. Thus, the first process provides data from the PLC, as specified in the configuration file. At the same time, a second process may be configured to process the data in the shared data array according to a second communication protocol, e.g., for communication the SCADA system.

EFFECT: high efficiency of communication with a programmable logic controller.

21 cl, 4 dwg