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Baud rate, Rts on, Rts off – ProSoft Technology MVI71-DNP User Manual

Page 29: Minimum response delay, Modem, Connect timeout, First character delay, Redial delay time

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Installing and Configuring the Module

MVI71-DNP ♦ PLC Platform

DNP 3.0 Master/Slave Communication Module

ProSoft Technology, Inc.

Page 29 of 172

August 23, 2007

Baud Rate

Baud Rate : 19200 #Baud rate for port 110-115200

Primary DNP Port Baud Rate: 300, 600, 1200, 2400, 4800, 9600, 19200, 384
(38400) , 576 (57600), 115 (115200). The module has been tested for baud rates
up to 19200.

RTS On

RTS On : 0 #0-65535 milliseconds before message

This value represents the number of 1 ms increments to be inserted between
asserting the RTS modem line and the actual transmission of the data.

RTS Off

RTS Off : 0 #0-65535 milliseconds after message

This value represents the number of 1 ms increments to be inserted after the last
character of data is transmitted before the RTS modem line is dropped.

Minimum Response Delay

Min Response Delay : 0 #0-65535 milliseconds before response sent from

slave

Minimum time between receiving a request and transmitting a response. Allows
master time to disable transmitter on an RS-485 network.

Modem

Modem : No #Use a dial-up modem on this port (Yes or No)

This parameter defines if a dial-up modem is used on the secondary DNP slave
port. A modem cannot be used if the port is configured as a master.

Connect Timeout

Connect Timeout : 20000 #0-65535 milliseconds before connect timeout

Defines the number of milliseconds to wait for the CD signal to be set high. The
CD signal indicates a connection is made using a dial-up modem.

First Character Delay

First Character Delay : 1000 #0-65535 milliseconds before 1st char after connect

Defines the number of milliseconds to wait before sending the first message after
the connection is first made. This delay only applies to the first packet sent to the
modem.

Redial Delay Time

Redial Delay Time : 100 #0-65535 1/10 seconds min before redial attempt

Defines the minimum number of milliseconds to wait before a redial attempt is
made by the slave.