Rice Lake PR5230 Fieldbus Transmitter - Manual (Page 75)

PR 5230 Instrument Manual Installing the Instrument and Plug-in Cards
Sartorius EN-75
4.4.4.4 Bus Termination
The end nodes in a ProfiBus-DP network must be fitted with termination resistors, to prevent reflections in the
bus cable.
Bus termination switch in mounting plate
Bus termination switch ‘ON’ Bus termination switched on.
If the module is the last one or the first one in the network,
this switch must be set to ‘ON’, or an external terminating
resistor in the connector must be used.
Bus termination switch ‚OFF’ Bus termination switched off.
When using an external termination in the ProfiBus
connector, the switch in the mounting plate must be in
position ‘OFF’.