Mitsubishi Electric Melsec Q Series User Manual page 24

Term
Server service
Server computer
Job
Stored procedure
Update settings
Configuration computer
Time zone
Tag component
(Component)
Data source
Database (DB) or
relational database
(RDB)
Table
Device
Device tag (Tag)
Trigger condition
A
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Generic term for the services can be offered by a server computer to which DB Connection
Service is installed
There are database server service and application server service.
The database server service is a service for accessing a database.
The application server service is a service for linking with a program.
There are database server computers and application server computers.
The database server computer is a personal computer with a relational database which links
information with the MES interface module.
The application server computer is a personal computer with a program that operates upon
request from the MES interface module.
A unit of process for linking information by a MES interface module.
Stored procedure combines sequential processing procedures into one program against the
database, and save it to the database management system.
This executes processing based on the arguments received from MES interface module, and
returns the processing results to MES interface module.
Processing updates the MES interface module settings from MES Interface Function
Configuration Tool
Personal computer for configuring various settings required for the MES interface function in the
MES interface module
This computer can be shared with a server computer.
Standard time zone for each region of the world
Each nation uses the time difference ( 12 hours maximum) from the time at the Greenwich
Observatory in 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.
In some nations, daylight time in which the clock is advanced for one hour is used in summer.
Generic term for a component (Device data) making up a device tag (Tag)
This data organizes the communications path, data type, device, etc. for access to each
programmable controller CPU device data as a single data unit.
Connection information necessary for accessing data using ODBC
®
With Windows , a data source name is assigned to connection information for management. 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.
Data management format managed with relational databases
It is a two-dimensional table format composed of rows and columns.
Variety of memory data in the programmable controller
There are devices handled in units of bits and devices handled in units of words.
Data table that contains a set of information (Component) required to access the device data in
the programmable controller CPUs on the network
The MES interface module collects device data in units of tags at an interval defined in the tag.
Startup conditions for job operation
Description
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