Device description
Leuze electronic
BPS 301i
12
3
Device description
3.1
Device overview
3.1.1 General information
The BPS bar code positioning system uses visible red laser light to determine its position and its speed
value relative to a bar code tape that is affixed along the travel path. This takes place in the following steps:
• Read a code on the bar code tape (see figure 3.1)
• Determine the position of the read code in the scanning beam
• Calculate the position to within less than a millimeter using the code information and the code posi
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tion relative to the device's center.
The position and speed values are then output to the controller via the host interface.
The BPS consists of device housing and interface connection hood for the connection to the control. The
BPS can optionally be delivered with display and optics heating.
The following connection hoods are available for the connection of the RS 485 interface:
• MS 301 connection hood with M12 connectors
• MK 301 connection hood with spring-cage terminals
• Connection hood KB 301 with cable
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Bar code tape
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Connection hood
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Device housing
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Middle of the scanning beam (device middle, output position value)
Figure 3.1: Device construction, device arrangement and beam exit
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