OY51
Measuring light grids (10 mm beam spacing)
16
9.3.2 LBO – last beam occupied
The process value [LBO] indicates the position/number of the last interrupted light beam.
The following examples are for illustration purposes.
3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1
2
[LBO] = 12
3
3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1
2
[LBO] = 8
Fig. 3: Example – LBO
Free light beam
Interrupted light beam
1:
Number of light beams
2:
Detection direction
3:
Object
LBO: Process value
9.3.3 CBO – central beam occupied
The process value [CBO] indicates the position/number of the central interrupted light beam. If there
are several non-contiguous interrupted sections, the process value [CBO] refers to the section with the
most consecutive interrupted beams.
The following examples are for illustration purposes.
3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1
2
[CBO] = 11
3
3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1
2
[CBO] = 13
3
3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1
2
[CBO] = 5
Fig. 4: Example – CBO
Free light beam
Interrupted light beam
1:
Number of beams
2:
Detection direction
3:
Object
CBO: Process value
9.3.4 NBO – number of beams occupied
The process value [NBO] indicates the number of interrupted light beams.
The following examples are for illustration purposes.
