3.1.4. Changing DNP3 Serial PORT Parameters

This section descibes how to change serial port configuration parameters used by the DNP3 protocol. Refer to 3.1.2 to change parameters common to all protocols.

*DNP must have already been assigned as port’s protocol per Section 3.1.1 or 3.1.2.

CLICK ON EACH TOGGLE (+) below for instructions on changing a specific parameter.

DNP Source Address

DNP3 protocol requires a unique device source address from 1 to 65535 and specific configuration parameters associated with the unsolicited response feature.
To change the DNP source address:
MENU > COMMUNICATION (as shown in Section 3.1) > select port with “Modbus” protocol > “Address:” > set digits

Enable/Disable DNP Unsolicited Responses

To enable or disable DNP unsolicited responses: MENU > COMMUNICATION (as shown in Section 3.1) > select port with “DNP” protocol > “Unsolicited:” > select option

*Unsolicited responses are rarely used in DNP protocols. Before enabling unsolicited responses check with the network administrator to make sure the network is capable of supporting DNP unsolicited responses.

*The remaining DNP parameters are only used when DNP unsolicited responses are enabled.

DNP Unsolicited Response Destination Address

To change DNP unsolicited response destination address: MENU > COMMUNICATION (as shown in Section 3.1) > select port using “DNP” protocol where unsolicited responses are enabled > “Destination address:” > change digits

DNP Unsolicited Response Acknowledgement Timeout

To change DNP unsolicited response acknowledgement timeout:
MENU > COMMUNICATION (as shown in Section 3.1) > select port using “DNP” protocol where unsolicited responses are enabled > “Timeout ms:” > change digits (value is in milliseconds)

DNP Number of Unsolicited Response Tries

To change DNP number of unsolicited response retries:
MENU > COMMUNICATION (as shown in Section 3.1) > select port using “DNP” protocol where unsolicited responses are enabled > “Retries:” > change digits