DAP Technology 1394, Руководство по эксплуатации

Страница: 241 / 458

Mil1394 Protocol support
241 Copyright © DapTechnology B.V., 2005-2019 - All Rights Reserved., 5/20/2019
This button can be used to hide the Signals View.
Signals Table
The signals table is shown on the left side (or using the complete width if the "Details" panel is hidden)
and displays the active set of signals. Signals are grouped by 1394 channel number and Message ID.
Optionally, signals can also be grouped into signal groups. Within a group, signals are sorted in the order
they were added to the active set.
The first column contains the Name of the signal and the second column displays the current value.
Current values are calculated from the raw captured bits using the signal definition fields like data type,
factor, offset e.o. Values can be shown in the following colors:
· Black: The signal occurred exactly once in the selected frame
·
Red: The signal occurred more than once in the selected frame. The last value received is shown.
· Gray: The signal did not occur in the selected frame. The last value received before the selected frame
is shown.
As the tree view contains different kinds of items, only the items that are actual signals will have text in
the values column. Signal items that have their number of bits field set to zero will be considered group
items and will show nothing in the Values column.
The currently selected signal is indicated by the selection bar. In the picture above the bar is placed at the
signal labeled Pressure. When you select a signal through the signals view, the Control(s) on the Control
Panel that are linked to the selected signal will also be selected.
Details Panel
The "Details" panel shows all fields that together form the definition of a signal. The following fields are
shown:
Signal Id
This is a number that is automatically assigned by the Mil1394 Signal Monitor when the signal is added to
the active set. These numbers are unique per signal and are used to tie Controls on the Controls View to
signals.
Signal name
User-defined name for the signal.
Channel
The 1394 channel number this signal is transmitted on.
Message Id
The Mil1394 Message ID this signal is defined in.
Quadlet offset
The offset in quadlets relative to the 1394 data section of the packet. Offset zero points to the Message ID
field.
Bit offset
The offset in bits relative to the the quadlet offset defined above.
Number of bits
The number of bits occupied by the signal.
Data type
The data type to store the signal in after extracting the bits. When a signed type is chose, the value is
sign-extended. Can be one of the following types:
·
Bool: Zero means false, non-zero means true
·
Uint8: 8 bits unsigned integer
· Uint16: 16 bits unsigned integer
·
Uint32: 32 bits unsigned integer