Commissioning
Leuze electronic
OGS 600
59
TNT
35/7-2
4
V
Type 4 process data query
Table 8.7:
Type 4 process data query
Type 4 process data response
Table 8.8:
Example response for type 4 process data with 2 traces
Contrast
= 120 * 100 = 12000 LSB
Left edge of trace 1
= 1200 / 10 = 120.0 mm
Right edge of trace 1
= 1300 / 10 = 130.0 mm
Left edge of trace 2
= 1500 / 10 = 150.0 mm
Right edge of trace 2
= 1600 / 10 = 160.0 mm
From the number of user data bytes, it is possible to calculate how many traces have been
found:
• per edge: 2 bytes
• per trace: 2 edges
=> This results in 4 bytes of user data per trace.
Type
Byte 0
Byte 1
Byte 2
Byte 3
Byte 4
Node no./
identifier
PD type
PD-In1
PD-In2
CRC
Query
PD
13
h
04
h
0
h
0
h
CRC
Byte 0
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7
Trace 1
Node no./
identifier
User data
length
PD status
Contrast
Left
edge
lowbyte
Left
edge
highbyte
Right
edge
lowbyte
Right
edge
highbyte
Response
1C
h
08
h
0
h
78
h
B0
h
4
h
14
h
05
h
Byte 8
Byte 9
Byte 10
Byte 11
Byte 12
Trace 2
Left
edge
lowbyte
Left
edge
highbyte
Right
edge
lowbyte
Right
edge
highbyte
CRC
DC
h
05
h
40
h
6
h