User manual 250/400 OLED
Rev.: SG-20220516
Page 65 of 79
FlexxPump 250 / 400 OLED
User manual
8.2.4. Control/input signal „Status request“
The „Status request (sign of presence)“ control signal can be used to check the last status of the
FP 250/400 OLED and the last lubrication stroke. In addition, the „Status request (sign of presence)“
control signal can be used to cyclically check whether the FP 250/400 OLED can be reached.
Description:
The FP 250/400 OLED is properly connected to an external controller via the electrical interface and
connected to the power supply.
Pulse control mode is activated on the FP 250/400 OLED.
A high level is applied to PIN 4 of FP 250/400 OLED for >500 milliseconds.
The control signal „Status request (sign of presence)“ with signal length of 1600 (1575 ... 1625)
milliseconds high level can be sent from the external control (PLC) to the FP 250/400 OLED.
After the end of the transmission of the control signal „Status request (sign of presence)“, the
FP 250/400 OLED repeats the output signal of the past lubrication stroke on PIN 4.
At the earliest >500 milliseconds after the end of the response signal, a possible next control signal
can be sent from the external control (PLC). For the characteristics and interpretation of the output
signal, refer to Chap. 8.3. In the meantime, the FP 250/400 OLED does not process any control signals.
