User's Manual

116
ION-B User Manual
TPRF
Whichever baud rate you choose through dip-switches 6 and 7, remember that:
• the same RS232 connection speed must be set up on the remote supervision unit
• the baud rate which is selected through the dip-switches 6 and 7 set the connection
speed for both the RS232 port and the RS485 port as the TPRN uses both ports with the same
rate.
RS485 Port
The RS485 port consists of two RJ45 connectors, which can both work as input or output ports
to and from a RS485 bus.
This RS485 bus has to be used in order to connect a multi sub-rack system to the remote
supervision unit. In this case:
• the TPRN sub-racks have to be connected to one another via an RS485 bus in a chain;
• In order to monitor the entire system, the remote supervision unit has to be connected to
one of the TPRN sub-racks through an RS232 port.
Before connecting the TPRN sub-racks belonging to a multi-sub-rack system, remember to
assign an exclusive binary address to each one. This is essential in order to let the Supervision
System recognize the different master units without any confl ict.
The binary address assignment can be done through dip-switches 1, 2, 3, 4 and 5 which are
located on the interior TPRN backplane (see Fig 4.2.5). A list of the correspondences between
the addresses and the dip-switches is provided in Table 4.2.2: simply note that dip-switch 1 is
the least signifi cant binary digit, while dip-switch 5 is the most signifi cant.
The baud rate of the RS485 ports is the same as the RS232 port as per the dip-switch 5 setting.
Figure 4.2.6 - Dip-switches on the TPRF31 backplane
Baud Rate [bps] Dip-switch 6
Dip-switch 7
9600 OFF OFF
19200 ON OFF
57600 OFF ON
115200 ON ON
Table 4.2.2 - Setting the RS232 baud-
rate4 through dip-switches 6 and 7
1
ON