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Mitsubishi Electric GOT 1000 Series Manual Page 159

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(5) Clear DB buffer request
(a) Select a tag component used to request for clear processing of the DB buffer.
Tags that have a tag component with [Array setting] cannot be selected.
(b) The following explains the operation of the clear processing using [Clear DB buffer request].
Data type of tag component
Bit
String
Other than the above (Including
string)
*3
Do not change the value of the specified tag component until the clear processing is completed.
Even if the value changes, the clear processing is not interrupted.
*4
To make another DB buffer clear request after completion of clear processing, wait for a sampling interval of the specified tag
component or more, and then set the device as follows:
• Bit type: ON
• Character string type: "1"
• Other than the above: 1
(6) DB buffering full
(a) Select a tag component into whose device the status of whether the DB buffer is full or not is stored.
Tags that have a tag component with [Array setting] cannot be selected.
(b) Data are stored as follows depending on the data type.
Data type of tag component
Bit
String
Other than the above
(c) When the DB buffer becomes full, buffering operation will be stopped.
After buffering operation is stopped, even if a job for which DB buffering is enabled is activated, its SQL
texts are discarded without being buffered.
Execution of a job for which DB buffering is enabled is not canceled.
POINT
POINT
POINT
Check [DB buffer utilization] shown in this section (7) to prevent the "DB buffer full" status.
The clear processing of the DB buffer is performed when the specified tag component is ON.
Turns OFF after completion of the clear processing.
Clear DB buffer request
Tag component value
DB buffer clear
processing
The DB buffer is cleared when "1" is written to the specified tag component.
"0" is written after completion of the clear processing.
The DB buffer is cleared when "1" is written to the specified tag component.
"0" is written after completion of the clear processing.
OFF : DB buffer is not full.
ON : DB buffer is full.
"0" : DB buffer is not full.
"1" : DB buffer is full.
0 : DB buffer is not full.
1 : DB buffer is full.
Description
*3*4
Execute clear
*3*4
*3*4
Description
6.9 Option Setting
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