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ELECTRICAL CONNECTIONS
Master
Slave
Slave
Repeater
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Terminating resistor
Anschluss Pumpe (4)
Pin No.
Function
Pin 1
+24 V supply voltage
Pin 2
Communication IM1
Pin 3
Communication IM2
Pin 4
not assigned
Pin 5
Communication IM3
Pin 6
Pre-alarm level
Pin 7
Dry run
-
Pin 8
GND
Installation example / bus diagram
All devices are connected in a bus structure (line).
Up to 32 nodes (master or slaves) can be networked within one segment.
The first and the last device must be provided with a terminating resistor. The bus segments are connected to the overall network
with repeaters (amplifiers), but remain electrically isolated. Up to maximum 126 nodes (including repeaters) can be connected
within the overall network.
The bus nodes are identified by the bus address. Each address must be unique and may only be assigned once.
NOTE
The minimum cable length between the individual nodes must be at least 1 m for transmission rates of more than 1.5 Mbit/s.
It must be ensured for the cable installation that the PROFIBUS cable does not run parallel with other live cables.