Connection equipment and a field device control system
AssigneeYokogawa Electric Corporation
InventorHideyuki Sakamoto
Life of this patent
Estimating the term…
Abstract
A connection equipment (IJB 200) for connected to a control system (205) via a cable (206) and a field device (201) via a terminal port (306), comprising: a processor (300) configured to determine the terminal port corresponding to the field device reference included in a communication signal received from the control system and to instruct a transmitter/receiver (304) to transmit the communication signal to the terminal port determined, and an isolator (305B) configured to electrically isolate the communication signal to be transmitted to the field device via the terminal port and the electric power signal to be provided to the field device via the terminal port, from the other terminal ports.
Claims17
A connection equipment connected to a field device via one of a plurality of terminal ports, the field device controlled by a control system connected to the connection equipment, the connection equipment comprising:
- a transmitter/receiver;
- a processor configured to receive a first communication signal from the control system via the transmitter/receiver, to determine the terminal port from among the plurality of terminal ports based on a field device reference included in the received first communication signal, and to instruct the transmitter/receiver to transmit the received first communication signal to the field device via the determined terminal port;
- and
- an isolator configured to electrically isolate the first communication signal to be transmitted to the field device via the determined terminal port and an electric power signal to be provided to the field device via the determined terminal port, from rest of the plurality of terminal ports.
A field device control system for controlling a field device from a control system via a connection equipment, and providing an electric power signal to the connection equipment comprising:
- the control system comprising:
- a first processor configured to generate a communication signal including an field device reference of the field device;
- a first transmitter/receiver configured to transmit the communication signal;
- and
- the connection equipment comprising:
- a memory configured to store a table for associating the field device reference of the field device with an identification of a terminal port;
- a second processor configured to determine the terminal port corresponding to the field device reference included in the communication signal received from the control system based on the table, and to instruct a second transmitter/receiver to transmit the communication signal to the determined terminal port;
- the second transmitter/receiver configured to transmit the received communication signal received from the second processor to the field device via the determined terminal port based on the instruction by the second processor;
- an electric power adjustor configured to adjust a level of an electric power signal to be provided to the field device via the terminal port based on an input level of an electric power signal received via a cable;
- and
- an isolator configured to electrically isolate the communication signal to be transmitted to the field device via the determined terminal port and the electric power signal to be provided to the field device at the determined terminal port, from the other terminal ports.
A processor in a connection equipment which connected to a control system via a cable and a field device via a terminal port, comprising:
- an address resolution module configured to resolve a relationship of a field device reference of the field device and an identification of the terminal port to which the field device is connected, by referring to a table stored in a memory of the connection equipment,
- a destination determination module configured to determine the terminal port to which a communication signal from the control system is to be transmitted, in response to communication with the address resolution module, based on the field device reference included in the communication signal,
- a protocol conversion module configured to convert a protocol applied to the communication signal between the control system and the connection equipment into a protocol applied to the communication signal between the connection equipment and the field device.
Dependencies are inferred from the claim text.