Rockwell Automation 1784-PM16SE SoftLogix Motion Card Setup and Configuration Manual - Manual (Page 35)

Publication 1784-UM003A-EN-P – June 2003
SoftLogix Controller 27
Termination Character 1 and 2
Enter the characters that be used to define the end of a line. Valid hex range
values are from 0 to 255. The default value for Termination Character 1 is $0D,
and the default value for Termination Character 2 is $FF.
The ARL and ABL instructions use these characters to signal the end of a line.
If you do not wish to use these characters, you can either avoid the use of these
instructions, or you can define Termination Character 1 as $FF, where $FF
tells the controller not to use any definable termination characters when using
the ARL or ABL instructions.
If you want to use only one character to signal the end of a line, use
Termination Character 1, and define Termination Character 2 as $FF.
Append Character 1 and 2
Enter the characters that are appended to the end of a line. Valid hex range
values are from 0 to 255. The default value for Append Character 1 is $0D, and
the default value for Append Character 2 is $0A.
The AWA instruction appends the specified characters to the end of the
messages it sends out. If you do not wish to use these characters, you can
either avoid the use of the AWA instruction, or you can define Append
Character 1 as $FF, where $FF tells the controller not to append characters
when using the AWA instruction.
If you want to append only one character, define Termination Character 1 as
the desired character, and define Termination Character 2 as 0xFF.
XON/OFF
Check this option to regulate the flow of incoming data.
For example, when this option is checked and the receive buffer gets to be
80% full, an XOFF (0x13) character is transmitted to tell the sending device to
stop sending. When the buffer has been processed so that it is less than 80%
full, the XON (0x11) character is sent to tell the device to resume sending.
This option is disabled when the Control Line option is configured for Half
Duplex.
Echo Mode
Check this option to cause any data received in the ASCII port to be sent right
back out to the device that sent it. For example, you could use this option with
a dumb terminal that is unable to display what it sends, but can display what is
echoed to it.