SIPLACE 80 F4_EN - 第37页

36 Description The productivity can b e further en- hanced through exact kn owledge of the current system condition and utiliza tion rate. This informa - tion is furnished by Production and Machi ne Data Ac quisitio n sy…

Description

A single placement program on

the line computer is sufficient for

all of the SIPLACE machines in a

production line. It contains the in-

formation necessary for placement

of a specific type of PCB, from the

dimensions of the PCB to the

placement positions of the com-

ponents to the complete compo-

nent and GF library. The program

can be created manually using edi-

tors in the SIPLACE line computer

or - easily and time-saving - it can

be generated automatically from

the CAD data of the PCB. The

converted data read in by means

of a CAD postprocessor can be

transferred into the SIPLACE line

computer’s data pool via a stan-

dard LAN. The placement pro-

grams then pass from the HOST

computer directly into the master

data management of the line com-

puter.

The CAD postprocessor can be

variably adjusted insofar as the or-

der of the data and the format are

concerned. The data to be con-

verted must meet the following

preconditions:

ASCII data

Table-oriented: one line per

placement position

Separators can be variably ad-

justed but must be the same for

all fields

Minimum information content:

component name, X-, Y-. angle

position.

The central filing of the line com-

puter (master) data enables an

automated link to higher-level

computer systems. Changes

therefore automatically affect all

connected, appropriately config-

ured lines. It is possible to switch

between local and central data

management at any time.

Using a conversion program inte-

grated into the SIPLACE line com-

puter it is possible to adopt place-

ment programs from earlier

Siemens SMD placement ma-

chines which could be run on an

SP-120/HS-180 line or on MS-1xx

machines (BP and BM files). The

data are converted into the

SIPLACE format and stored in the

line computer, where they have to

be supplemented by additional re-

quired information such as PCB

dimensions, layouts of subpanels

in the cluster and set-ups.

An additional computer with the

same hardware and software con-

figuration as the line computer can

be employed as an external

programming station. Even if it is

at a different location than the

production equipment, it can man-

age data for a number of lines and

be connected with the line com-

puters in production via LAN.

The file format >setupname<.rt, in

which set-up data in simple form

can be generated, makes it possi-

ble to import set-ups which were

programmed on your own or third-

party systems. It facilitates pro-

gramming on external systems

and the use of higher-level produc-

tion controls. This file is also

stored in table-oriented ASCII for-

mat and is therefore very easy to

create.

The goal of SIPLACE set-up opti-

mization is to reduce placement

times and non-productive machine

time. Attention is directed to opti-

mally balancing the entire line in

addition to minimizing the place-

ment time of each individual ma-

chine. The nozzle allocation of the

placement heads is adjusted for

the PCB at hand. To minimize

travel, the optimal erection location

of the feeder and the most favor-

able order of placement is com-

puted. As long as the component

table capacity of a SIPLACE line

permits, set-up optimization can

be employed to combine a number

of products into a single set-up.

An optional add-on is changeover

optimization which optimally com-

bines a relatively large number of

products in several set-ups. The

objectives are to achieve the

shortest possible throughput times

and optimal balancing of the entire

lines but also to factor in changeo-

ver/set-up times.

SIPLACE Software Architecture:

Creation of Placement Programs

Generation of Placement Program from the CAD Data of the PCB

Data conversion

Configurable postprocessor of the line

computer or external postprocessor of the

CAD system manufacturer or 3

party

software vendor

Data transfer

Standard LAN (Ethernet TCP/IP and FTP or

NFS) or disk (MS-DOS; UNIX)

Description

The productivity can be further en-

hanced through exact knowledge

of the current system condition

and utilization rate. This informa-

tion is furnished by Production and

Machine Data Acquisition systems

(PDA/MDA). The SIPLACE Ma-

chine Data Management System

collects all relevant data about the

line and individual stations and

presents the data in graphic form.

This includes evaluations as to

availability, pick-up error rates,

placement speed, MTBF and

MTTR as well as displaying the

track errors complete with com-

ponent item number of GF num-

ber. This speedy, comprehensive

view of the operating behavior fur-

nishes starting points for possible

improvements.

SIPLACE Software Architecture:

Machine Data Management System

Screen Shots

Description

The function of the Semiconductor

Equipment Communication Stan-

dard (SECS) II is the uniform defini-

tion of communication interfaces

to the production equipment ob-

tained from different manufactur-

ers. It has been further developed

into GEM Standard (General

Equipment Model) which is also

suitable for SMT production facili-

ties. To this end, an external user-

specific production computer

(host) is connected via LAN to a

GEM computer integrated into the

machine control. The interface is

used by host systems created by

the user or by application software

from a third-party manufacturer.

The SECS II / GEM communication

protocol supports central control,

process control and their data

management of entire production

lines at the line computer. It is

possible through Statistical Proc-

ess Control (SPC), for example, to

effect preventive maintenance

which eliminates or greatly re-

duces non-productive time.

SIPLACE Software Architecture:

Data Interface SECS II / GEM (Option)

Functions

Identification of the equipment

Access to

Product data, error messages,

machine states, measurement results

Protection of

Data, connections

(connection set-up, resynchronization)

Configuration of a Production Line with GEM Computer

HOST

Line Computer

Factory LAN GEM

GEM