CP643 系统参考.pdf - 第140页

(5) Reacquisition When All Block Skip Marks are Skipped The use of an additional condition for distinguishing whether reacquisition is to be performed or not is determined based on the Proper data item setting 11. Machin…

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If all blocks are skipped then only the following message will display.
“All Block Skip”
Skipped blocks can be verified on the screen shown above. If there are more than 40
blocks the blocks can be verified by pressing F1 and F2.
Precautions
• Activation of this option is limited to cases where the block skip board is to be
replaced and reused. Of course it must be possible for the block to be replaced. Since
a block on a multi-block board cannot be replaced, this function would serve no
purpose even if it was enabled.
• If this option has been enabled the block skip board must either be replaced or cleared
off with the pallet. If the board is removed without being replaced, operation cannot
be guaranteed. Since what will happen as a result of block skip mark recognition for a
block on a pallet on which there is no board can be determined, it is possible that parts
will be placed in the area where there is no board.
• If a block is skipped using the block skip command on the machine the skip status will
not be cleared even if RESET is pressed. However, the block skip status will be cleared
for a block that is skipped as a result of block skip mark recognition. If the block skip
command on the machine is executed while block skip mark acquisition is in progress
then those blocks that have been skipped up to that point as a result of block skip
mark recognition will not be cleared either even if RESET is pressed.
B1P
B2P
B3P
B4S
B5P
Operation : Front
Press RESET SW
Remove block skipped board.
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CP643S2044
Part 2 Chapter 1 Basic Operation
Edition 1.1 2-1-82 CP643E System Reference
(5) Reacquisition When All Block Skip Marks are Skipped
The use of an additional condition for distinguishing whether reacquisition is to be
performed or not is determined based on the Proper data item setting 11.
Machine_Status_A ???? ???? ??1? ???? (?: 0 or 1).
11. Machine_Status_A ???? ???? ??1? ???? (?: 0 or 1)
If all block skip marks that have been read are judged as skipped, this will result in a
machine cycle stop.
If the machine is then restarted the block skip marks will be read again.
Execute the loader command to clear off the board. (This is left up to the operator after
the machine stops.)
The following message will display after the machine stops.
“Certify to B_mark!!”
Precautions
If the board check function using block skip marks is specified, this function check will
take precedence over reacquisition of block skip marks when all block skip marks are
skipped.
1.19.3 Block Skip Specifications
The specifications of the block skip function are as follows:
• Block Number Restrictions
Block numbers can be set from 0 to 255.
• Managing the Skip Sequence in the Program
When a skip sequence is set in the program using the host computer’s editor, all block,
device and sequence skips are effective. Moreover, the skip sequence cannot be
canceled at the machine.
• Marks Permissible On One Board
Including fiducial marks, a maximum of 255 marks are permissible.
• Block Skip Mark Restrictions
Size: Set in host computer
Mark color: The mark should contrast with the board color so that the camera can
read it easily.
Location: Same as fiducial marks
• Conditions Under Which Block Skip Marks Are Read
When the letter "B" has been entered into the sequence data device type (W) column,
the machine looks for block skip marks.
• Conditions Under Which Block Skip Is Carried Out
An area of a certain size (Size_X, Size_Y) centered around the coordinate location is
inspected. If all this area matches the color specified for the block skip mark, the
corresponding block is skipped.
Part 2 Chapter 1 Basic Operation
Edition 1.1 2-1-83 CP643E System Reference
1.19.4 Points to Remember When Using Block Skip
It is possible for a block skip mark sequence to reference a fiducial mark, but the fiducial
mark sequence must be placed before the block skip mark sequence.
A block skip that is set using the machine command keys is valid until cleared by the
operator if the program being run does not have block skip mark sequences. For
programs which do have block skip mark sequences, the block skip flags set at the
machine are cleared before each new board is produced.
If a board which uses block skip marks, is cleared off in the middle of production and a
new board is then added by hand, production on the new board will continue using the
original block skip information of the previous board. On the other hand, if a new board
is loaded into the machine using the [LOADER] or [AUTO] function then block skip
marks will be read again and the block skip function will be carried out using this new
information.
Part 2 Chapter 1 Basic Operation
Edition 1.1 2-1-84 CP643E System Reference