20140704#1.0 EBS Ink Jet Systeme
57
Data buffering – it is used for storing successive data portions in a special
register, Communications port. Two modes can be set:
Enabled – a successive portion of the data received by the special
register is stored if the end condition is met – see Ready to print after.
The buffer size is 20, which means that 20 various, ready-to-print pieces
of data can be received and stored. When any other data comes, it will
overwrite the data at the 20
th
position and a long sound is heard at the
same time to inform about the overflow. The data buffer forms a kind of
queue, the data is printed in the same sequence in which it has been
received by the special register. If all the data buffered is printed out, and
another print is released, the printer behaves according to the No-data
action parameter setting.
Disabled – a successive portion of the data received by the special
register overwrites the data that has been received earlier but has not
been printed yet. The data is overwritten until it is printed. If no other
data is received subsequently, the printer behaves according to the
No-data action parameter setting. In this mode, the last data received
is the first printed.
No-data action – it defines printer behavior when no data has come from
an external device (when the end condition is not met – see Ready to print
after) and printing of a project containing a Communications port object
has been released. The following modes of operation can be set:
Do nothing – if printing is released when data is not received properly
or the end condition is not met (see Ready to print after), the project
is not printed. The message informing about this fact is displayed.
Print blank object – the project is printed as usual, with the entire
Communications port object being empty.
Print last message – the project is printed together with the
Communications port object, with the object being filled with the last
message received successfully from an external device. If such a
printout is made as a first, the project is printed but the area where the
data should be is empty.
Ready to print after – it defines how the printer decides whether it has
received complete data (the end condition) from an external device or not.
The following modes can be set in this parameter:
Time interval [ms] – the printer waits for data over a certain time. The
time is counted from the moment when a last project is printed or, if the
On data process field (in the expert settings – see the Advanced
(p. 58) sheet tab) is filled in – from the moment when an end-of-
printing acknowledgement is sent. The time is typed in in the field
below the parameter as a number of milliseconds (between 4 and
1000 ms). If no data is received within the defined time, the printer
behaves according to the No-data action parameter setting.
Data count – the printer is ready for printing a project containing a
Communications port object when it receives a number (from 1 to 255)
of characters from an external device; with the number being defined in
the field below the parameter. If printing is released although the condition
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