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CommPort Properties
Com Port Parameters
dnc4U dnc software allows you up to 64 different CNC machine
settings and has a full set of DNC parameters to make CNC
communication possible on many different controller configurations.
ASCII and EIA is fully supported.
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When dnc4U first loads it creates
a set of default parameters for each of these machines and
gives them the name "Machine1" "Machine2"...."Machine64".
You probably want to change these to something more meaningful
to you. Just type in the name of the CNC into this box. You
can have anything, blanks, even duplicate names.
dnc4U ships with many settings predefined. Simply select from
the list. Its important to understand that these are starting
points as they may have been changed by the CNC builder or
by yourselves
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Send Properties
Configs
dnc4U uses all the popular end of block settings, LF/CR/CR,
CR/LF, LF and CR
You can send control codes before and after the main body
of the NC program to initiate CNC transfer. These can be sent
external to the NC file so that you don't have to store these
garbage codes in your files to disk. You can decide to ignore
any blocks that contain a specific character (maybe comments)
or delete blank line to save space on your CNC memory.
In addition you can choose to send data in block format, or
if you suffer data starvation of buffer overflows, in data
packet chunks of a constant specific size. Data transfer modes,
Block Send, Drip-Feed, Turbo Drip-Feed and Executive Tape
mode.
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Delays
Many CNC machines are intolerant of data that is not quite
right. You can setup block delays or character delays for
these difficult (older) controllers
You can wait for XON, so that on CNC machines such as Fanucs,
the file is sent to the CNC as soon as you press INPUT at
the control. Many CNC require that a remote device is online
before it will open its own com-port, you can do this too.
If your CNC has problems buffering data, you can wait a specified
time after sending so that comms is held open until all the
data has been received. In addition you can setup a timeout
so that comms is automatically closed down after a specified
period of time. You can also wait for {ANY} character to be
issued rather than looking for the XON.
You can setup a drip-feed timeout. Often when drip-feeding
you can have periods where the CNC is cutting and not wanting
to receive data. You can setup up a time out up to 32000 seconds
(thats a long time in between moves)
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