Date Code 20010518 Settings 6-9
SEL-2020 Instruction Manual
Table 6.4: SET P Port Communications Settings Information (continued)
Setting Comment
REP_ADDR
Prompt. Address of master to Report to (0-65534 or 0000h-FFFEh).
Description. Set this to the address of the master on your DNP network. This is the
address the SEL-2020 will send unsolicited responses to. (See Appendix I: Distributed
Network Protocol (DNP) V3.00 for an explanation of the DNP protocol.)
NUM_EVENT
Prompt. Number of events to transmit on (1-200).
Description. Set this to the number of events you want to have accumulate before the
SEL-2020 sends the data in a DNP unsolicited response. (See Appendix I: Distributed
Network Protocol (DNP) V3.00 for an explanation of the DNP protocol.)
AGE_TX
Prompt. Age of oldest event to force transmit on (1.0-60.0 sec).
Description. Set this to the maximum age you want your event data to get to before
sending it in a DNP unsolicited response, even if the minimum number of events have
not yet accumulated. (See Appendix I: Distributed Network Protocol (DNP) V3.00 for
an explanation of the DNP protocol.)
CONFIRM_TO
Prompt. Time-out for Acknowledge of Event Data (50-50000 msec).
Description. Set this to the maximum time it should take your master to issue a DNP
application layer confirm to an unsolicited or event data response. When sending DNP
unsolicited responses or event data, this is the delay the SEL-2020 will wait before
considering the data transmission unsuccessful. (See Appendix I: Distributed Network
Protocol (DNP) V3.00 for an explanation of the DNP protocol.)
FAST_OP
Prompt: Enable Fast Operate commands on this port (Y/N).
Description: Use this setting to enable (Y) or disable (N) fast operate support on this
master port. Fast operate commands can be used to rapidly change the various set and
clear logic bits. See Appendix H: SEL-2020 Configuration and Fast Operate
Commands for more information.
PORTID
Prompt. Port Identification String.
Description. Provides a convenient means to label or identify the connected device.
Auto-configuration automatically sets the Port ID to the relay ID on SEL IED ports.
Used by the WHO command to identify the port. Maximum 40 characters.
MODEM
Prompt. Modem Control (Y/N).
Description. You set to Y (Yes) if using an external dial-up modem. MODEM setting
is forced to Y (Yes) if a built-in modem is installed on that port. This setting is only
available for master and other IED ports.
MSTR
Prompt. Modem Startup String.
Description. If you use a modem, you must enter a modem startup string to initialize the
modem. The default string sets the modem to answer on four rings. You may set this
number to match the needs of your modem and application, but, to match SEL-2020
expectations, there are a few modem settings that should not be modified:
• The escape character must be "+"
• The modem must be in verbal mode
• The echo must be disabled
• The X0 code set should be selected
• The escape code guard time should be one second
(See Appendix B: Optional Internal Modem Information for details on internal
modem. See your modem instruction manual for details on your modem.)
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