Protocols for position value output
Leuze electronic GmbH + Co. KG
BPS 8
66
Function sequence when a marker bar code is in the detection area:
Figure 9.1: Function sequence for marker bar code inside the detection area
This process toggles the data as long as the MM bit is set to 1, and the memory contains marker data. The
MM status information does not depend on the BPS' speed or on the control's clock rate.
Marker bar code in the detection range
• The respective MM 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 deleted:
• after power off/on.
• in Standby mode.
• if no polling takes place for 10s.
Marker data
are retrieved.
Marker data are not re
-
trieved.
New or old
marker bar code is
detected.
• Marker data are retrieved by the request telegram.
• Marker data are deleted from the memory.
• The respective MM bit in the status byte is reset once the
memory no longer contains any data.
New or old marker bar code is detected.
