Protocols for position value output
Leuze electronic GmbH + Co. KG
BPS 8
72
Function sequence if a marker is inside the detection area:
Figure 9.3: Function sequence for marker bar code inside the detection area
This process toggles the M bit in the status byte as long as there is a marker in the detection range. The
marker information does not depend on the BPS' speed or on the control's clock rate.
Marker bar code in the detection range
• The respective M bit in the status byte is set.
• Marker data are stored in the memory.
• Marker data can only be overwritten by new marker data.
• The memory is never deleted. It is only empty after power off/
on.
Marker data
are retrieved.
Marker data
are not retrieved.
New or old marker bar
code is detected.
• The marker data are retrieved by the request telegram.
• The marker data stay in the memory
• The respective M bit in the status byte is reset.
New or old marker bar code is detected.
