Mitsubishi Electric GOT 1000 Series Manual page 20

Term
Time zone
Tag component (Component)
Data source
Database (DB)
or
Relational
database (RDB)
Database computer
Table
Device
Device tag (Tag)
Transaction
Trigger conditions
Trigger buffering
DB buffering
Handshake
Field
Variable (Temporary variable)
Record
Rollback
A - 18
Standard time zone for each region of the world
Each nation uses the time difference (within
the United Kingdom (GMT) as the standard time. The region using the same time difference is called a
time zone.
The standard time for Japan is 9 hours ahead of the GMT.
Some nations adopt daylight-saving time in summer season in which clocks are set one hour ahead of
the standard time.
Generic term for components (Device data) making up a device tag (Tag)
A set of data that contains the information on the GOT's internal devices, and the data type and devices
required for access to the gateway devices
Connection information necessary for accessing data using ODBC

With Windows , a data source name is assigned to connection information for manegement. The
database can be accessed via ODBC by specifying the data source name in the MES interface function.
Data management method that follows relational data model logic
One data is expressed as a collection of multiple items (Fields) and the data collection is expressed as a
table.
Data can be easily merged and selected using key data.
One of the server computers, on which the database communicating with the GOT is run when the MES
interface function is used.
Data management format managed with relational databases
It is a two-dimensional table format composed of rows and columns.
Variety of memory data that each controller internally contains.
There are devices handled in units of bits and those handled in units of words.
Data table that contains a set of information (Components) required to access the device data in the GOT
Unit that multiple databases related to each other can be correctly processed all at once.
Processing managed as transaction is either correctly completed or canceled with the rollback. Each
database is processed by the action, and each transaction is processed by the job with the MES interface
function.
Startup conditions for job operation
When too many trigger conditions (data transmission conditions) are met simultaneously, this function
allows the system to buffer the data and the time that trigger conditions are met to the user area. The
action (operation and transmission of the data) for the buffered data is executed later.
Even when the data transmission triggers are activated frequently, no triggers are missed so that all the
jobs are executed.
This function allows the system to temporarily store SQL texts that failed to be sent due to a
communication error in a CF card and to resend the texts upon recovery.
A constant exchange of signals between the sending and receiving ends to achieve high reliability
Corresponds to a column in a relational database and indicates a type of data (Record attribute).
Variable that can be used in the same job when temporarily storing values selected from a database or
when writing operation values to a database or tag components.
Corresponds to a row in a relational database. One row (Record) stores the values of multiple columns
(Fields).
Processing for canceling changes to a database
Description
12 hours) from the time at the Greenwich Observatory in