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Serial I/O Submenu
91
DTR Function
This parameter allows the user to change the operation of the Data Terminal
Ready (DTR) line on the printer interface. The DTR line is used to indicate
printer status to the host computer.
•
Busy (default). In this mode the DTR line is used to signal the host to stop
sending data because the printer buffer is 85% full. However, some
cabling systems require the DTR Line of the printer to be configured
differently. This cabling scheme can interfere with printer transmission or
host reception of the Xoff signal when using the Xon/Xoff Serial Protocol.
This situation can result in Buffer Overflow and Data Overrun situations
and loss of data.
•
Offline. When this option is active, the DTR Line is used to signal only
that the printer is Online or Offline. Unlike the Busy option, the Offline
option will not interfere with operation of the Xon/Xoff Communication
Protocol.
•
Power. When this option is active, the DTR Line is used to signal the host
that the printer is powered up. This DTR Selection will not interfere with
host reception of the Xoff/Xon Serial Protocol, because unlike the Busy
selection, the DTR Signal is not toggled at the same time as the Xoff
Signal. When using this option, the DTR Polarity parameter must be set to
Actv Hi.
DTR Polarity
This parameter is used to set the DTR Signal polarity. Active Low is the
default.
Busy Polarity
This parameter allows you to control the polarity of the Busy Signal. Active
Low is the default.
RTS Function
The RTS line of the serial interface has been used to indicate Busy in addition
to the DTR line. This option allows the RTS line to either be continuously High
or to function as Busy (default).
Robust Xon
This parameter behaves the same as a normal Xon/Xoff protocol, except that
with this parameter enabled, the Xon code will be sent every 5 seconds when
the printer is ready to accept data. OFF is the default.
Buffer Size in K
This option configures the amount of memory allocated for the serial port
buffer. You may specify between 1 and 16 Kbytes, in 1-Kbyte increments.
The default is 16K.
Summary of Contents for 6605
Page 1: ...TallyGenicom 6600 Series Printers User s Manual ...
Page 3: ...User s Manual TallyGenicom 6600 Series Printers ...
Page 14: ...14 Chapter 1 Contact Information ...
Page 114: ...114 Chapter 5 RS 232 Serial Interface ...
Page 150: ...150 Chapter 7 Diagnosing Problems ...
Page 158: ...158 Appendix B ...
Page 170: ...170 Appendix C Performance Limitations ...
Page 176: ...176 Appendix D Stacker Operation ...
Page 196: ...196 Appendix G Software License Agreement ...
Page 211: ......
Page 212: ...255552 001B 255552 001 ...