Serial Port Defaults - Allen-Bradley A-B QUALITY DL20 Series User Manual

Chapter 8
Special Functions
Setting Up I/O
Port Functions
8–14
Setting Serial Port
After setting parity, you are prompted for the RS-422 port.
The DL20 RS-422 port can transmit and receive data from other DL20
devices used as addressable masters or slave DL10 / DL50 displays.
If you want to use the port as an output, answer No. All data output at the
RS-232 port will also be transmitted at the RS-422 port. Set the port to
output if slave displays or addressable masters are being used.
If you want to use the port as an input, answer Yes. Data can then be
received at the RS-422 port just like the RS-232 port.
After selecting RS-422 port direction, you are prompted for a blank line
between messages.
Answering No reduces the amount of paper used and answering Yes makes
the printout easier to read.
Serial Port Default Values
Table 8.A lists the default values for the serial port.
Table 8.A

Serial Port Defaults

Parameter
Printer Carriage Width
Number of Nulls
Baud Rate
Parity
422 Port Direction
Print Blank Line
USE 422 IN? N
PRINT BLANK LINE?
Setting
80 Columns
4
9600
None
Output
Yes
Options
20 - 220 Columns
0 - 250
300, 1200, 9600
None, Odd, Even
Input or Output
Yes or No