Scanivalve MPS4232, Руководство по аппаратному и программному обеспечению

Страница: 42 / 96

36
MPS4232
Section 5: Software
FUNCTION BYTES DATA TYPE DESCRIPTION
Frame Time (ns) 4 U Integer
Frame Time in nanoseconds.
This value will either be a time relative to 0 (when PTP is disabled),
or an absolute PTP time.
Temperatures 16 Float Array of 4 temperature values as read from the 4 RTDs.
Pressures 128
Float or
Integer
Array of 32 pressure values. The float or integer is selected based on
the units (float = EU, integer = RAW).
Table 5.2 - Padded 64 Channel Binary Data Packet
This binary packet is used when SET SIM == 64. When enabled, the packet size and structure will match a MPS4264,
64-channel binary packet, however will use padded data for channels not being used (pressure channels 33-64, tempera -
tures 5-8). This allows the same packet structure to be used for MPS4200 32 and 64 channel modules in the same software.
This packet is a total of 348 bytes.
FUNCTION BYTES DATA TYPE DESCRIPTION
Packet Type 4 Integer A Hex
Packet Size 4 Integer Size in bytes of this packet (348)
Frame Number 4 Integer The current frame number if in the scan mode.
Serial Number 4 Integer Serial Number of the module (SET SN)
Frame Rate 4 Float Scanning rate in Hz
Valve Status 4 Integer 0 - Px Only (32 is valveless)
Units index 4 Integer Units conversion index (add table)
Units conversion
factor
4 Float Conversion factor from PSI to selected units
PTP Scan Start
Time (sec)
4 Integer Scan start time in seconds
PTP Scan Start
Time (ns)
4 Integer Scan start time in nanoseconds
External Trigger
Time
4 U Integer External Trigger Time in us
Temperatures 32 Float
Array of 4 temperature values as read from the 4 RTDs. The
remaining bytes will be padded with “0” (5 - 8).
Pressures 256
Float or
Integer
Array of 64 pressure values. The float or integer is selected based on
the units (float = EU, integer = RAW).
Channels 1 - 32 will be real data. Channels 33-64 will be padded with
“0”.
Frame Time 4 Integer Time the frame occurred (seconds)
Frame Time 4 Integer Time the frame occurred (nanoseconds)
External Trigger
Time
4 Integer Time the external trigger occurred (seconds)
External Trigger
Time
4 Integer Time the external trigger occurred (nanoseconds)