HOKUYO AUTOMATIC UST-05LN - Hysteresis function of detection area; Setting of UST

Document No: C-41-02490-9
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3.8 Hysteresis function of detection area
When a sensor detects an object near the boundary of the detection area, outputs 1 to 3 may oscillate
(changing to ON/OFF state) repeatedly. To prevent such oscillation, sensor has a hysteresis function that
temporarily increases the area size. Ratio of increase can be specified using the Area Designer application
software. Hysteresis can be selected from these 3 types: None (0%), Low (3.125%) which increases the size
of detection area, and High (6.25%) which also increases the size of detection area. If the object is not
detected on the temporary increased area setting, it will return to the original detection area setting.
3.9 Setting of UST
Setting of operating parameter of UST by Area Designer.
Table 3-2 describes UST’s parameters and settings.
Table 3-2 Parameter setting
Parameter
Description
Serial baud rate
When connecting with RS422 can set serial baud rate (available
only in UST-05LA). Select from below setting.
Setting
115.2kbps － Default
230.4kbps
460.8kbps
921.6kbps
Output logic
Inverting area output can be set. (Other outputs will not be
inverted) Select from below setting.
Setting
Description
Active High
Refer to section 3.10.
Active Low
Invert outputs
Scan skip count
(For details, refer to section 3.16.)
Scan skip count can be set. Select from below setting.
Setting
Description
0
No scan skip.
1
1 scan skip.
2
2 scan skip.
3
3 scan skip.
4
4 scan skip.
5
5 scan skip.