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

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.