11-17
11
Setting the Input/Output Conditions
Binary
method
Average light
level method
When a sampled binary image changes (the white area exceeds 50%),
the measurement is started.
· A change in a binary image means a change in a binary image from
black (background) to white (workpiece) or from white (background)
to black (workpiece).
When the average light level of a sampled image enters a specified
range, the measurement is started.
On the [MAIN OPS MENU], move the cursor to SET-SCRN, and press the SET key.
-
On the [OBJECT TYPE COND] menu, move the cursor to item
t
SYSTEM-IN/OUT and press the SET key.
-
On the [SYSTEM SETUP] menu, move the cursor to item
2
OBJECT TYPE COND and press the SET key.
[OBJECT TYPE I/O]
1
MONITOR LIGHT LVL
CAM1(1~2) NO
YES
2
LIGHT LEVEL COND
(TO NEXT SUB-MENU)
3
TRIGGER CCD START REG.NO
YES(BIN AVG-LIT-LVL)
4
CCD TRIGGER COND (TO NEXT SUB-MENU)
5
COMPUTER
LINK OUT BLOCK-00(MESR-0 CMR01)
&SERIAL OUTPUT
6
SHUTTER SPEED
1/00060(1/30~1/10000)
7
STORE REF IMAGE
MOVE UP.L(224,208) LO.R (287, 271) REG. DISP
8
UPPER MENU
1
2
- The trigger window can be set in any position for each object type.
In the past, the position of an external sensor had to be adjusted every time the object type was
changed. However, since this function eliminates the necessity of physical position adjustments,
the changeover time can be reduced.
11-3 CCD trigger
(1) Outline
This function samples a specified part (trigger window) of an image captured by the CCD camera
at a high rate, and starts the measurement when the sampled image changes. Therefore, moving
objects can be measured without requiring an external trigger, such as a photo sensor.
To use this function, set the input/output the CCD trigger on the [I/O SETTINGS] menu (pages 11-
1 to 11-16), and set item
3
TRIGGER CCD START and item
4
CCD TRIGGER COND on the
[OBJECT TYPE I/O] menu.
-
See Item (2).
- There are two methods for starting the measurement when there is a change in a sampled
image, i.e. a binary method and an average light level method.
Trigger window
Feeding direction
Object type 2
Object type 1
Feeding direction
- The internal CCD trigger can be used with camera 1. (It cannot be used with camera 2.)
- An image that can be used to set the sample window conditions is obtained when the display
mode is switched from the through mode to the freeze mode.
(2) Setting procedure
1. Move the cursor to item
3
TRIGGER CCD START with the up and down keys, and press the
SET key.
- Move the cursor to BIN or AVG-LIT-LVL with the left and right keys, and press the SET key.