IC-LO_16 Datasheet, PDF (16/25 Pages) IC-Haus GmbH – TRIANGULATION SENSOR

iC-LO
TRIANGULATION SENSOR
preliminary
SKO
Code
0x0
0x1
...
0xF
Addr. 0x0A; bit 7:4
Description
1.5 µs
2 µs
9 µs
Table 20: Sample Timing
Rev B3, Page 16/25
RW _{Switching matrix}
Internal switching state SOI and warning state WARNI
are determined from the filtered comparator outputs
according to the following truth table (table 21):
KDF
0
0
0
0
1
1
1
1
KSwF KSeF SOI
1
1
0
0
1
0
0
0
0
1
0
0
1
1
1
0
1
1
0
0
0
1
0
0
WARNI
0
0
0
0
0
1
0
0
System state
Object detected far, enough light
Object detected far, low light
Object detection impossible, not enough light
Invalid configuration (see page 15)
Object detected near, enough light
Object detected near, low light
Object detection impossible, not enough light
Invalid configuration (see page 15)
Table 21: Switching Matrix
Output drivers
The polarity of the switching output can be selected due
to the connected switch using SOCNO. Output WARN
is equivalent to the internal WARNI signal.
SOI
t<t
AR
t=t t=t
AR
AF
t=t t=t
AR
AF
SOCNO
Code
0
1
Addr. 0x0C; bit 0
RW
Description
Configures the output SO as normally open and
NSO as normally closed (SO = SOI)
Configures the output SO as normally closed and
NSO as normally open (SO = SOI)
Table 22: Output Configuration
If the switching outputs SO and NSO are not required,
they can be disabled by SOEN. A zero is then output
at both outputs.
SOEN
Addr. 0x0C; bit 4
RW
Code
Description
0
SO and NSO disabled
1
SO and NSO enabled
SO
Figure 7: Rise and fall delay
Rise delay t_AR suppresses peaks that are shorter than
t_AR (first SOI peak in figure 7). If SOI is active for longer
than t_AR, switching output SO is activated. If SOI then
drops to 0, SO only switches back when fall delay time
t_AF has elapsed (second SOI peak in figure 7). If SOI
remains at 1 after the fall delay time has elapsed, SO
trails the falling edge at SOI directly (third SOI peak
in figure 7). The fall delay time is thus equivalent to a
minimum pulse duration at the outputs. Warning output
WARN can only be switched on at the same time as
the switching output and is reset as soon as sufficient
received light is detected.
The delay times are configured using parameters TAR
and TAF.
Table 23: Output Activation
TAR
Addr. 0x0A; bit 3:2
RW
Code
Description
0x0
0 ms
0x1
5 ms
Furthermore, in mode PERIODIC_MEASURE (table ^0x2
27) a rise and fall delay can be configured for the warn- ^0x3
20 ms
50 ms
ing and switching outputs (see figure 7 by way of exam-
ple).
Table 24: Rise Delay