GBS Elektronik MCA-527 Firmware Commands - Manual (Page 42)

MCA527
Command name CMD_QUERY_USER_DATA
Compatibility Compatible to the MCA166 command.
Execution right Not necessary
Description The command reads sixteen 32 bit values from the MCA memory.
e: 0 ... 255
start entry number
Format integer integer integer long integer
Parameter preamble command e 0 end flag
Byte string (HEX) A5 5A 5E 00 e 00 00 00 00 00 B9 9B
Result data array
Byte offset 0 Sixteen 32 bit values 32 bit [16]
Byte offset 64 unused 42 bytes
Byte offset 106 Command flag and parameters 8 bytes
Byte offset 114 unused 12 bytes
Byte offset 126 Checksum unsigned short
Byte offset 128 unused 4 bytes
Command name CMD_QUERY_SPECTRA
Compatibility Compatible to the MCA166 command.
Execution right Conditionally necessary (see buffer control and remarks)
Description The command reads the spectrum data.
n:
Number of first channel and buffer control (Bit 15 ... 12)
c: Compress factor (1 ... 128)
Format integer integer integer integer integer integer
Parameter preamble command n c 0 end flag
Byte string (HEX) A5 5A 5B 00 n
l
n
h
c
l
c
h
00 00 B9 9B
Buffer control See CMD_QUERY_SPECTRA_EX (next command).
Result data array
Byte offset 0 Channels counts unsigned long [32]
Byte offset 128 Read out buffer state unsigned short OCCUPIED = 0x2000
OVERRUN = 0x4000
FILLED = 0x8000
Byte offset 130 Checksum unsigned short
Remarks The compress factor determines how many channels each are combined to one value. This value is
the maximum of the combined channels. The transfer of combined channels can be used to reduce
data transfer if the data are only intended for displaying the accumulation of the spectrum during a
measurement. If the spectrum data are intended for evaluation, the whole spectrum with compress
factor 1 has to be transferred.
See also the remarks of CMD_QUERY_SPECTRA_EX (next command).
42