Field communication apparatus and process control system
AssigneeYokogawa Electric Corporation
InventorShuji KASE
Life of this patent
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Abstract
A field communication apparatus may include a first communication unit and a second communication unit each of which performs communication between a plurality of field devices and a host device, the first communication unit and the second communication unit constituting a duplex unit, a first explosion-proof housing that accommodates the first communication unit, and a second explosion-proof housing that accommodates the second communication unit. The first communication unit may be capable of being removed from the field communication apparatus while being accommodated in the first housing, and the second communication unit may be capable of being removed from the field communication apparatus while being accommodated in the second housing.
Claims18
A field communication apparatus comprising:
- a first communication unit and a second communication unit each of which performs communication between a plurality of field devices and a host device, the first communication unit and the second communication unit constituting a duplex unit;
- a first explosion-proof housing that accommodates the first communication unit;
- and
- a second explosion-proof housing that accommodates the second communication unit,
- wherein the first communication unit is capable of being removed from the field communication apparatus while being accommodated in the first housing, and the second communication unit is capable of being removed from the field communication apparatus while being accommodated in the second housing.
A field communication apparatus comprising:
- a first communication unit and a second communication unit each of which performs communication between a plurality of field devices and a host device, the first communication unit and the second communication unit constituting a duplex unit;
- a first explosion-proof housing that accommodates the first communication unit;
- a second explosion-proof housing that accommodates the second communication unit;
- a first explosion-proof connector that connects the first communication unit with a cable connected to the plurality of field devices or a network connected to the host device;
- and
- a second explosion-proof connector that connects the second communication unit with the cable or the network,
- wherein the first communication unit is capable of being removed from the field communication apparatus while being accommodated in the first housing by releasing a connection between the first communication unit and the cable or the network by manipulating the first connector, and
- the second communication unit is capable of being removed from the field communication apparatus while being accommodated in the second housing by releasing a connection between the second communication unit and the cable or the network by manipulating the second connector.
A process control system comprising:
- a plurality of field devices;
- a host device that manipulates the plurality of field devices by communicating with the plurality of field devices;
- a first communication unit and a second communication unit each of which performs communication between the plurality of field devices and the host device, the first communication unit and the second communication unit constituting a duplex unit;
- a first explosion-proof housing that accommodates the first communication unit;
- a second explosion-proof housing that accommodates the second communication unit;
- a cable that connects the first communication unit and the second communication unit with the plurality of field devices;
- a network that connects the first communication unit and the second communication unit with the host device;
- a first explosion-proof connector that connects the first communication unit with the cable or the network;
- and
- a second explosion-proof connector that connects the second communication unit with the cable or the network,
- wherein the first communication unit is capable of being removed from the process control system while being accommodated in the first housing by releasing a connection between the first communication unit and the cable or the network by manipulating the first connector, and
- the second communication unit is capable of being removed from the process control system while being accommodated in the second housing by releasing a connection between the second communication unit and the cable or the network by manipulating the second connector.
Dependencies are inferred from the claim text.