Chapter 8 Operation Example; Overview - Mitsubishi Electric RD81MES96 User Manual

8
OPERATION EXAMPLE
This chapter shows the operation example of simple data collection in a system configuration including an MES interface
module.
8.1

Overview

The following shows the operation example based on a metal parts manufacturing line automated by a programmable
controller system.
Process
Each process of the metal parts manufacturing line is shown below.
Process
Machining
Imprint
Inspection
Operation
The following shows the operation between the control system and the production control database.
(1)
Ô Ó
Õ Ö Ø
(1) Control system (CPU module, MES interface module)
(2) Production control database
(3) Target manufacturing number 35 units, lot ID code (US)
(4) Acquisition of manufacturing schedule information
(5) Delivering the actual manufacturing information
1.
Acquire the manufacturing schedule information.
 Database →  MES interface module →  CPU module
• MES interface module acquires the target manufacturing number and lot ID codes from the table of the production control database before starting the
manufacture.
• The parts are manufactured according to the target manufacturing number.
The lot ID code is imprinted in front of the serial number on each part.
2.
Deliver the actual manufacturing information.
 CPU module →  MES interface module →  Database
• When each part is moved into the inspection process, the actual data, such as serial numbers, manufacturing time and part weight, are collected by
MES interface module and transferred to the production control database.
3.
Change the data to use easily.
 Scaling with MES interface module
• The inspection scale notifies the control system of the part weight measured by a positive decimal number in a gram.
The production report from the database information needs to be read in a kilogram.
Therefore, the weight data is converted to g→kg format with MES interface module to prevent control logic changes and extra processing at the
database-level.
8 OPERATION EXAMPLE
74
8.1 Overview
Description
Machines metal materials and manufactures finished parts.
Imprints a lot ID code and a specific serial number on each manufactured part.
Measures the weight of each completed part.
(3)
(4)
(5)
US2001 10:00:00 0.501kg
US2002 10:00:10 0.495kg
US2035 10:05:50 0.512kg
(2)
Ò
DB
×