SMAR RHP303, Руководство пользователя, Страница: 10 / 16

RHP303 –Profibus Hub Repeater
10
Figure 10 – Detail of spur segment connectors
Terminators
All RHP303 channels have configurable terminators. The main channel termination is adjusted in
OFF by default. If the RHP303 is the last or the first segment device, the termination must be
adjusted in ON.
The termination of the other channels is adjusted in ON by default because the new segment is
expected to be initiated on the RHP303.
Do not forget to turn on the switch at the other segment end.
NOTE
Non-used channels must have their terminators activated.
Figure 11 – Detail of channel terminators position
Baud Rate Configuration
The RHP303 recognizes the transmission speed by default. If necessary lock the RHP303 on given
transmission speeds, the SW1.1 to SW1.5 must be adjusted on the required value. To execute the
adjustment remove the top cover.
Figure 12 – Switches SW1.1 to SW1.5 for communication rate adjustment
The switches SW1.1 to SW1.5 are used to select the baud rate used by the Profibus DP Repeater
according to the next table. The baud rate selected will be the same for all channels. These baud
rates are standardized by the Profibus DP protocol.