Sices D-PRO, Техническое руководство

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22 D-PRO Protection relay Technical Manual

JP_05: GND

JP_06: DSR

JP_07: RTS

JP_08: not connected

JA_09: not connected
In order to configure the serial port 1, you need to set the parameters:

P.0452: serial port 1 Modbus address

P.0453: serial port 1 baud rate

P.0454: serial port 1 settings

P.0470: serial port 1 Modbus registers order
The description of these parameters is in document [1].
4.7.2
The device can be equipped with a RS485 serial port (serial port 2), which is galvanically
insulated and independent from serial port 1 (RS232), that can be used for the connection by
Modbus to PC or other devices.
For further details on the RS485 connection, its use and the parameters configuration, refer to
document [1].
Connection:

JO-3: RS485 connection A

JO-2: RS485 connection B
The RS485 connection needs a 120Ohm terminal resistor on both ends of the cable. The
resistor is included in the device; in order to insert it, you just need to jumper JO-1 and JO-2.
You cannot connect a modem to the serial port 2; despite that, you can use it for the same
connections carried out by the RS232 serial port using RS485/RS232 or RS485/USB adapters
when it is required.