Command line interface
interval the digitiser should wait for an acknowledgement message, before assuming
that the block could not be transmitted. If a period of
interval
passes without an
acknowledgement, the digitiser's behaviour then depends on the current
transmission mode (see above).
interval
is measured in milliseconds. The default is 150. If the value is greater
than the average time between blocks being generated, and an outage occurs in the
return communications link, the digitiser will be producing data faster than it can
transmit them, and gaps will start to be observed. However, systems using slower
communications links (e.g. radio links) may be unable to acknowledge blocks in
under 150 ms. You should choose a value for
interval
which is suitable for your
particular installation.
6.11.14 RE-USE
Syntax:
RE-USE
Instructs the DM24 to use its Flash memory as a circular buffer, overwriting the
oldest data when it becomes full.
In this mode, the Flash memory will always contain the latest data.
6.11.15 WRITE-ONCE
Syntax:
WRITE-ONCE
Instructs the DM24 not to overwrite data in the Flash memory when it becomes full
Instead, when the digitiser runs out of space, it switches to
DIRECT
transmission
mode and will leave the Flash memory untouched.
In this mode, the Flash memory will always contain the earliest data.
6.11.16 MODE?
Syntax:
MODE?
Queries and displays the current Flash memory usage mode:
RE-USE
or
WRITE-ONCE
,
as described above.
6.12 Downloading over the serial port
6.12.1 DOWNLOAD
Syntax:
DOWNLOAD
Initiate a data transfer from the Flash memory over the serial connection. Scream!
Can be configured to auto-record these data. Refer to the Scream manual for a
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Issue U - December, 2021
