IMPROVED INTERFACE OF FIELD DEVICE WITH CIRCUIT PROTECTION MECHANISM Russian patent published in 2013 - IPC G06F13/00 G05B19/42 

FIELD: radio engineering, communication.

SUBSTANCE: field device interface module comprises the following: a connector configured for functional connection with a computer; multiple terminals functionally connected with a field device; an interface protocol module connected with multiple terminals and configured to generate signals in accordance with a communication protocol of the process; a controller connected with the interface protocol module; a power supply source module connected with multiple terminals and connected with the controller; a metering circuit connected with multiple terminals and the controller, besides, the metering circuit is configured for measurement of voltage at multiple terminals and provision of its indication for the controller.

EFFECT: expansion of functional capabilities of a field device by provision of the possibility for a user of a field device to supply energy and communication signals to a field device without a separate source of supply and connection to it, and also prevention of power supply at a field device, if the connected field device is already supplied with power.

6 cl, 5 dwg