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1.14 Changing T able Acceleration There is little meaning in placing parts accurately if they are thrown out of position by the subsequent table movement. If there is a problem with parts moving on the board due to the h…

1.13 Changing Placement Specifications Based on Part

Height

When there is a mixture of parts to be placed, some with a height of 3.0 mm or less and

some with a height over 3.0 mm, placement specifications can be changed based on

settings in Proper data in order to prevent parts that have already been placed from

interfering with parts that are to be placed (station 10).

Changes in Placement Specifications [Example 1]

The height of the parts is checked in order from the first sequence. If a sequence with a

part whose height is over 3.0 mm is detected, all the sequences before that sequence are

placed. The sequence with the part over 3.0 mm is not allocated to station 16 until all

those sequences have been placed. (At the most, stations 16 to 10 may not be allocated

with parts.)

Sequence No 1 2 3 4 5 6 7 8 9 10

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Part height in PD 1.0 1.0 1.0 1.0 3.1 3.1 3.5 3.5 4.0 4.0

In the above example all the parts up to sequence No. 4 will be placed and then the part

for sequence No. 5 will be picked.

Changes in Placement Specifications [Example 2]

Sequence No. 1 2 3 4 5 6 7 8 9 10

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Part height in PD 1.0 1.0 1.0 1.0 3.1 1.0 1.0 3.5 4.0 4.0

The same as in the first example, in example 2 all the parts up to sequence No. 4 will be

placed and then the part for sequence No. 5 will be picked. Placement is carried out

under normal specifications from sequence No. 5 onwards.

Changes in Placement Specifications [Example 3]

Sequence No. 1 2 3 4 5 6 7 8 9 10

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Part height in PD 3.1 1.0 1.0 1.0 3.1 1.0 1.0 3.5 4.0 4.0

In this case even if placement specifications are changed in Proper data, placement is

carried out under normal specifications beginning from sequence No. 1.

[Proper Data Setting]

12: Machine_Status B = XXXX XXXX XXXX XX1X (X: 0 or 1)

Part 2 Chapter 1 Basic Operation

Edition 1.1 2-1-67 CP643E System Reference

1.14 Changing Table Acceleration

There is little meaning in placing parts accurately if they are thrown out of position by

the subsequent table movement. If there is a problem with parts moving on the board

due to the high inertia of the table, the acceleration of the table can be reduced after the

parts have been placed. The XY-table speed can be specified in the part data from 5

available speeds (UHi, Hi, Mid, Low, ULo). When placing parts with a “Low” or “ULo”

table speed, the table acceleration/deceleration is slower than usual to prevent part

placement deviations caused by motion shocks.

Set the table speed to an appropriate level for the parts you are placing in order to avoid

any unwanted movement of the parts.

The table mode “ULo” parameter can be changed to “SULo” using the following Proper

data setting.

Machine_Status_B XXXX XXXX XXXX 1XXX (X: 0 or 1)

If this Proper data item is set as shown above, the XY-table will be operated using a table

movement speed and speed change time that are even slower than the normal “ULo”

table mode. (“SULo” table mode)

Part 2 Chapter 1 Basic Operation

Edition 1.1 2-1-68 CP643E System Reference

1.15 Terminate Sequences

A terminate sequence can be set to ensure that all sequences up to and including the

terminate sequence are carried out, before the machine proceeds with the sequences after

the terminate sequence.

For example, consider the case where an SOJ is to be placed on top of a 1005 chip. If

recovery is carried out for the 1005 due to an initial failure to place that part, then it is not

possible to place the 1005 later since the SOJ will already have been placed. By setting a

terminate flag at the 1005, the SOJ cannot be placed until the 1005 has been placed.

A terminate flag is set in the sequence data of a production program.

Similarities and Differences Between Placing Parts Based on Part Height and Placing

Compared to Changing Placement Specifications Based on Part

Height

Similarity

The parts are allocated in a similar manner.

Differences

Parts Height Terminate Sequence

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Use of Proper data settings Yes No

Method of recognition Automatic Production program

Number of placement changes Single Multiple

Part 2 Chapter 1 Basic Operation

Edition 1.1 2-1-69 CP643E System Reference