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Parity
RTS/DTR
Line
Driver
Inactivity
State
Modem
DCD
Connection
Mode
(DS62
MD4
ONLY)
DTR Line Driver Inactive State is: High
High ? (Y/N, CR for no change):
RTS Line Driver Inactive State is: High
High ? (Y/N, CR for no change):
Select 7), from the Serial Port Configuration
Menu
changes the DTR driver state,
Default is
“High”
Select 6), from the Serial Port Configuration
Menu
changes the RTS driver state,
Default is
“High”
Select parity:
1 For None
2 For Even
3 For Odd
Enter Request :
Select 5), from the Serial Port Configuration Menu
selects the Parity,
Default
is None
Type
“Y”
for YES or
“N”
for NO and press ‘Enter’.
Parity is a simple form of error checking used in serial communication. For even and odd parity, the
serial port will set the parity bit (the last bit after the data bits) to a value to ensure that the
transmission has an even or odd number of logic high bits. For example, if the data was 011, then for
even parity, the parity bit would be 0 to keep the number of logic high bits even. If the parity was odd,
then the parity bit would be 1, resulting in 3 logic high bits. This allows the receiving device to know
the state of a bit so as to enable the device to determine if noise is corrupting the data or if the
transmitting and receiving devices' clocks are out of sync.
With no parity selected, it's assumed that there are other forms of checking that will detect any errors
in transmission. No parity also usually means that the parity bit can be used for data, speeding up
transmission. In modem-to-modem communication, the type of parity is coordinated by the sending
and receiving modems before the transmission takes place.
RTS (Request to Send)/ DTR (Data Terminal Ready) is normally used in conjunction with an external
modem. With no modem the RTS and DTS
default state is High.
Select 8),
to enable the
DS62 module console port
to operate with an external
modem. Ensure JMP4 has
pins 1&2 shunted.
Default
is Disabled
Modem DCD Connection Mode is: disabled.
Enabling this feature will allow DS62 EIA-232 console port
to operate
in conjunction with DCD signal from an attached external
modem.
Use BayTech MD6 modem adapter & place shunt block across
JMP 4, pins 1 & 2.
Enable ? (Y/N), CR for no change) :
Should a need arise for the use of an external modem. Two steps must be performed before the
modem will operate properly with the Ds62 module. 1
st
step is to enable option (8) of the Serial Port
Configuration. 2
nd
step is to place a shunt on pins 1&2 of JMP4, located next to the serial port on the
circuit side of the module.
