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9-11 System settings
[1] Illuminance (light level) monitor
(1) Purpose
1. Allows the system to monitor changes the lighting of the environment
If the light level exceeds the preset lighting range, it will be regarded as a change in the
environment and "Light level over range" will be displayed on the MAIN OPS MENU.
2. Automatic adjustment of the threshold values used for binary conversions can follow
changes in the lighting environment.
The threshold value is modified from the user's setting due to changes in the actual
brightness measured in the environment.
(2) Applications
Used when the level of illumination changed due to changes in voltage or when the influence
of sunlight in the workplace cannot be ignored.
(3) Setting procedure
The following procedure describes how to handle the settings in the [OBJECT TYPE I/O]
menu and in the [MONITOR LIGHT LVL] (check light level) menu.
On the MAIN OPS MENU, move the cursor to SET-SCRN, and press the SET key
- On the [SYSTEM SETUP] menu, move the cursor to 2 OBJECT TYPE COND
(conditions of object type) and press the SET key.
- Move the cursor to item t SYSTEM-IN/OUT on the [OBJECT TYPE COND] menu
(conditions for each object type) menu, and press the SET key.
1. Select 1 MONITOR LIGHT LVL (check light level) using the up and down keys, and press
the SET key.
- After selecting the camera number (1 or 2) using the up and down keys, select YES using
the left and right keys. Then press the SET key.
2. Select item 2 LIGHT LEVEL COND. (conditions for checking light level) using the up and
down keys, and press the SET key.
- The [LIGHT MONITR] (check light level) menu and the monitoring window will be
displayed.
[LIGHT MONITR]
1SIZE
4
2POSITION
3THRESHOLD VALUE
5
4NOTE AVG LIGHT LVL EXEC REG.AVE.GRYS=000.0
7
5UPPER MENU
8
3. Press the SEL key to enter the through image mode.
- T (through) will be displayed in the upper right corner of the screen.
4. Select item 1 SIZE, and item 2 POSITION, using the up and down keys, and press the
SET key. Then, set the size and position of the monitoring window using the direction keys.
- The monitoring window should be placed in a location with medium brightness, which does
not contain any objects to be measured.
- The monitor window is a rectangle 4 to 32 pixels tall and 4 to 64 pixels wide (se in multiples
of 4 pixels). The monitor window can be moved one pixel at a time.
- The average light level in the monitoring window is displayed on MES.AVE.GRYS (average
measured light level) in item 3.
[When monitoring changes in the lighting environment] ... If not, go to item 6.
5. Select item 3 THRESHOLD VALUE, using the up and down keys, and press the SET key.
- Select the upper and lower limits using the left and right keys, and set the light level range
(0 to 255) using the up and down keys. Then, press the SET key.
- When the average light level in the monitoring window is out of the preset light level
range, OVR ILLM. RANGE (light level over range) will be displayed on the MAIN OPS
MENU.
[OBJECT TYPE I/O]
1MONITOR LIGHT LVL
1
2LIGHT LEVEL COND
2
3TRIGGER CCD START REG.NO YES(BIN AVG-LIT-LVL)
X=08(4~32) × Y=08(4~64)
(256,240)
U.LM-255 L.LM-100(0~255)
MES.AVE.GRYS=000.0
9-115
CAM1(1~2) NO YES
(TO NEXT SUB-MENU)
3
T C1 H
Monitoring window
System settings
9
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