MK59xx
Cylinder sensor with IO-Link
8
5.3 Switching signal
The device has 2 switching signal channels SSC1.1 and SSC1.2. Each switching signal channel has a
parameter set with which the switching behaviour can be adjusted.
Using the parameter setting software, the switching signal channels can be freely assigned to one of
the outputs OUT1 or OUT2.
For devices that have only one output, the switching signal channels SSC1.1 and SSC1.2 can
only be assigned to OUT1.
The switch points and the switch point logic are set when the switching signal channel parameters are
set. If the process data value (PDV) exceeds a switch point, the hardware output changes its switching
state (active or inactive). Depending on the setting of the switch point logic, the output is in the active
switching state [High active] or [Low active]:
•
[High active]: Output in active state closed/ON (normally open/NO).
•
[Low active]: Output in active state open/OFF (normally closed/NC).
You can choose between the following switch point modes according to the IO-Link smart sensor
profile - Function Class "Object Detection"
-
: [Deactivated], [Single Point], [Window], [Two Point].
Deactivated
If the [Deactivated] mode is set for a switching signal channel, the assigned hardware output will not
change its switching state depending on the process data value, but permanently assumes the
inactive state: If the deactivated switching signal channel is set to [High active], it is permanently "low",
if it is set to [Low active], it is permanently "high".
Single-point mode
Only one switch point (SP1) is manually set or taught. The switch-off point results from the switch point
and the set hysteresis (H).
The switch point SP2 will be ignored in Single Point Mode.
active
inactive
PDV
0
SP1+H
SP1
H
Fig. 1: Single-point mode
Two-point mode
A switch point and a reset point are manually set or taught.
It is possible to configure which of the two switch points is the larger one. The larger switch point is the
reset point. In the example shown, SP2 is the switch point and SP1 is the reset point.
The hysteresis will be ignored in Two Point Mode.
PDV
0
SP1
SP2
active
inactive
Fig. 2: TwoPoint Mode
