DL8000 Preset Instruction Manual
Revised February-2016 DL8000 Keypad Display E-95
After the transmission portion of the test completes, the system tests all
baud rates, from lowest to highest. (Baud rates checked include 300,
600, 1200, 2400, 4800, 9600, 19200, 38400, and 57600). As the test of
each baud rate completes successfully, the system adds a P (for passed)
to the display. Any rates that fail are noted with an F.
Set Port
Rx Bytes / Tx Bytes
Baud rates
Par/StopBit/DataBit
Diag. in progress…
RS232 ch 1
120/120
PPPPPPPPP
The system also tests parity bits, stop bits, and data bits, again using P
to indicate a successful test and F to indicate a failure. When the test
completes the message STOP to End appears at the bottom of the
screen:
Set Port
Rx Bytes / Tx Bytes
Baud rates
Par/StopBit/DataBit
RS232 ch 1
120/120
PPPPPPPPP
PPP
Press STOP to end the test and return to the comm port selection
screen. Press EXIT to display the Diagnostics main menu.
E.5.7 Diagnosing RS-485 Communication Ports
Note: The preset must have an installed RS-485 module to diagnose
the RS-485 communications. If no RS-485 module is present,
the system displays a No RS485 Card in system error message.
Since RS-485 is a half-duplex communication mode, you need two
modules to test RS-485 communications. Set the two modules in half-
duplex un-terminated mode, as shown in Figure E-14 and Table E-9:
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