Leuze BPS 8 - Page 86

Protocols for position value output
Leuze electronic BPS 8 85
TNT 35/7-24V
Description
Bit SINGLE: If this bit is set to 1, a single measurement is output
(laser on – measurement – laser off).
The response telegram to the "SINGLE" request is sent after around 40 ms.
The "SINGLE" request cycle must be greater than 40 ms.
Bit POS: If this bit is set to 1, the position data is output.
The "POS" request cycle must be greater than 10 ms. If the no "POS" request
occurs within 10 ms, the laser is deactivated. A response telegram is sent to
a repeat "POS" request after approx. 30 ms.
Bit SLEEP: If this bit is set to 1, the Standby mode is activated.
The polygon wheel motor and the laser are switched off in Standby. Diagnosis
of the read system cannot be performed. When the device is reactivated, the
system start-up time is approx. 5 s.
Bit M: If this bit is set to 1, the marker bar code content is output.
Bit D: If this bit is set to 1, the diagnostic data is sent in response. An indicated error
is reset once all diagnostic data has been polled. This is indicated by the status
LED changing from red to green.
It is advisable to set only one bit in the request byte, as the BPS can only answer one request
at a time. If several bits are set, the function with the highest priority is executed.
Priority of the bits in the request byte:
• Priority 1: Diagnostic data request (D)
• Priority 2: Marker data request (M)
• Priority 3: Standby request (SLEEP)
• Priority 4: Position data request (POS)
• Priority 5: Request for one-time transmission of position data (SINGLE)
Byte Bit Name Function Description
0
0
D Request
diagnostic information
1 = Request diagnostic data
0 = Do not request diagnostic data
1
M Request
marker data
1 = Request marker data
0 = Do not request marker data
2
SLEEP Activate
Standby mode
1 = Activate Standby mode.
0 = Positioning mode
3
POS Request
position information
1 = Request position data
0 = Do not request position data
4
SINGLE Request
single measurement
1 = Request single measurement (laser on, measurement, laser off)
0 = Do not request single measurement
5…7 – None Without function, bit permanently set to 0
10XOR XOR combination Exclusive OR combination of byte 0 with 00
h