Control Apparatus, Monitoring Method, and Monitoring Program
AssigneeOMRON Corporation
InventorYuta NAGATA
Life of this patent
Estimating the term…
Abstract
A technique is desired that can output a warning to a user before a buffer of a controller runs out of a free space. A control apparatus includes a buffer for buffering log data sequentially generated, an interface unit connectable with an external storage device, a writing unit for sequentially reading the log data buffered to the buffer and sequentially writing the log data to the external storage device while the external storage device is connected to the interface unit, a monitoring unit for monitoring a free space of the buffer, and a warning unit for outputting a warning upon the free space falling below a prescribed value.
Claims7
A control apparatus comprising:
- a buffer for buffering log data sequentially generated;
- an interface unit connectable with an external storage device;
- a writing unit for sequentially reading the log data buffered to the buffer and sequentially writing the log data to the external storage device while the external storage device is connected to the interface unit;
- a monitoring unit for monitoring a free space of the buffer;
- a warning unit for outputting a warning upon the free space falling below a prescribed value;
- and
- an internal storage device,
- wherein while the external storage device is not connected to the interface unit, the writing unit sequentially reads the log data stored in the buffer and buffers the log data to the internal storage device.
(canceled)
A method of monitoring a buffer included in a control apparatus, the method comprising:
- buffering log data sequentially generated to a buffer of the control apparatus;
- while an external storage device is connected to an interface unit of the control apparatus, sequentially reading log data buffered to the buffer and sequentially writing the log data to the external storage device;
- monitoring a free space of the buffer;
- outputting a warning upon the free space falling below a prescribed value;
- and
- while the external storage device is not connected to the interface unit, sequentially reading log data stored in the buffer and buffering the log data to the internal storage device of the control apparatus.
A non-transitory storage medium storing thereon a monitoring program for a buffer included in a control apparatus, the monitoring program causing the control apparatus to perform
- buffering log data sequentially generated to a buffer of the control apparatus;
- while an external storage device is connected to an interface unit of the control apparatus, sequentially reading the log data buffered to the buffer and sequentially writing the log data to the external storage device;
- monitoring a free space of the buffer;
- outputting a warning upon the free space falling below a prescribed value;
- and
- while the external storage device is not connected to the interface unit, sequentially reading log data stored in the buffer and buffering the log data to the internal storage device of the control apparatus.
Dependencies are inferred from the claim text.