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User manual 250/400 OLED
Rev.: SG-20220516
Page 67 of 79
FlexxPump 250 / 400 OLED
User manual
8.3. Output signals – External control (PLC)
The FP 250/400 OLED has invariably defined output signals that are transmitted to the PLC via PIN 4 of
the M12x1 electrical interface depending on the condition of the FP 250/400 OLED.
Each time a control signal is sent from the PLC to the FP 250/400 OLED, the FP 250/400 OLED sends
an output signal after the action caused by the control signal has been executed, which must be waited
for, evaluated and interpreted by a suitable PLC program.
A high level (+ 24 V DC) is permanently present at PIN 4. During the transmission of the output signal,
the signaling for information transmission changes several times from a high level to a low level and back
again. After sending an output signal, a high level is permanently present at PIN 4.
The following graphic shows an example of an output signal.
Information about the status of the FP 250/400 OLED and about the past motor run must be evaluated
via an evaluation of the number of edge changes of the output signal. For the evaluation of the edge
changes, the rising edge (change of the output voltage at PIN 4 of the FP 250/400 OLED from a low
level (0 V) to a high level (+24 V DC)) must always be counted. The counted number of edge changes
corresponds to a one-to-one state of the FP 250/400 OLED.
The output signal is sent with a frequency of f = 5 Hz. The low level is a voltage of + 0 to 5 V DC, the high
level is a voltage b 17 and + 27 V DC.
Содержание FlexxPump 250 OLED
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