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Value
Explanation
0
Protocol version, always 1.
1
System status of the ClipX, see
153.
2
Bit mask of the digital flags Low-Word (32 bit), see
flags (I/O status)" on page
3
Bit mask of the digital flags High-Word (32 bit).
4
FIFO control flags, e.g. to detect an overflow.
5
Number of data bytes coming after the header data (number of FIFO entries
times 28 bytes).
6
Reserved, currently always 0.
7
Structure of the measured values for the RMB command
All measured values are stored as FLOAT-values with 4 bytes each in the FIFO. The time
is stored as UINT32 in milliseconds since the start of recording. An entry in the FIFO
therefore contains 28 bytes for the 7 values (6 signal sources and the time value). If the
entire FIFO memory is full (1000 entries, or 4000 from firmware 2.0), you get 28,000
bytes (168,000 from firmware 2.0) with values plus 32 bytes of header data.
Notes
•
An invalid measured value is always replaced by 1.001 * 10
tute value is not used.
•
The measured values are transmitted as 4 byte FLOAT with the byte sequence Little
Endian, i.e. the first byte is the LSB.
•
The time values in the FIFO are generated every millisecond by software by incre-
menting. They are therefore not exactly equidistant in a grid of 1 millisecond. The
accuracy of the time base is approx. 0.02 to 0.03%.
•
When recording simultaneously by several devices, you should select the highest
possible recording rate (number of values per second) in order to obtain a small jit-
ter between the devices. For example, use for all ClipX a digital input with the same
signal. Since the digital inputs are sampled in a grid at 1 ms, the time for a change
should not be less than 1.2 ms to ensure reliable detection. You can also set an
110
„System status: List of status bits" on page
157.
„Digital flags: List of I/O
30
; any defined substi-
Operation via Ethernet/OPC UA/PPMP
ClipX
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