Binary level sensor
LMT0xA
15
7.7 Unit locking / data storage
The IO-Link master stores all parameters of the connected sensor (data storage) if configured in the
master. When a sensor is replaced by a sensor of the same type, the parameters of the old sensor are
automatically written to the new sensor if configured in the master and if the sensor allows this. For
safety reasons the data storage can be refused by the sensor. Factory setting: [Open]
Data storage
– [Open] = Unit allows parameter download from the master.
– [Locked] = Unit refuses parameter download from the master.
7.8 Full adjustment via IO-Link
Full adjustment enables optimum sensitivity of the unit to be set to the medium to be detected (build-
up and foam are suppressed):
u
Fill the tank/pipe.
u
The probe tip must be completely covered with the medium.
u
Execute the system command [tSP1] or [tSP2].
w
The unit automatically sets the switching thresholds [SPx]/[rPx].
u
Check the function by an application test.
7.9 Parameter setting via the teach input
The teach input must be activated.
u
This requires previous configuration via IO-Link: parameter [ou2] = [tch].
Output OUT2 must be configured as hysteresis function (Hnc or Hno). If the window function is
set, an error during teaching results (
Ò
Error during teaching).
Only output OUT2 is available in the teach mode. In the teach mode the LEDs indicate the
switching status of output OUT2.
7.9.1 Full adjustment via the teach input
u
Fill the tank until the probe tip is completely covered.
u
Apply Ub+ to pin 4 for > 2 ... < 5 s.
The tool which is available for this process is the teach button (accessory).
w
LEDs flashing at 2 Hz.
w
After teaching the LEDs are on for 2 s. Then the colours change to regular operating mode.
7.9.2 Changing the output function
Output OUT2 can be changed from "NC" (Hnc) to "NO" (Hno) and vice versa.
u
Apply Ub+ to pin 4 for > 5 ... < 10 s.
w
LEDs are flashing, first with 2 Hz, after 5 s with a 1 Hz double flashing.
w
After the change the LEDs are on for 2 s. Then the colours change to regular operating mode.
w
After the successful change, the LEDs are on as follows:
No medium detected
LEDs = yellow (for Hnc)
LEDs = green (for Hno)
Medium detected
LEDs = green (for Hnc)
LEDs = yellow (for Hno)
GB
