GBS Elektronik MCA-527 Firmware Commands - Manual (Page 32)

MCA527
Command name CMD_QUERY_STATE
Compatibility Compatible to the MCA166 command.
Execution right Not necessary
Description The command reads the state.
Format integer integer integer long integer
Parameter preamble command 0 0 end flag
Byte string (HEX) A5 5A 5A 00 00 00 00 00 00 00 B9 9B
Result data array
Byte offset 0 MCA acquire mode unsigned short MODE_MCA = 0
MODE_MCS = 1
Byte offset 2 Preset (automatic stop condition) 31 unsigned short PRESET_NONE = 0
PRESET_REAL = 1
PRESET_LIVE = 2
PRESET_INT = 3
PRESET_AREA = 4
Byte offset 4 Preset value unsigned long
Byte offset 8 MCA mode: elapsed preset
MCS mode: elapsed MCS channels
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unsigned long
Byte offset 12 Repeat value unsigned short
Byte offset 14 Elapsed sweeps unsigned short
Byte offset 16 MCS time per channel [ * 10 msec] unsigned short
Byte offset 18 Elapsed time per channel [ * 10 msec] unsigned short
Byte offset 20 Real time [sec] unsigned long The fractional digits of the real time are
returned by CMD_QUERY_STATE527_EX,
byte offset 80.
Byte offset 24 MCA mode: counts per second
MCS mode: counts per channel
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unsigned long
Byte offset 28 Dead time [msec] unsigned long
Byte offset 32 Busy time [msec] unsigned long always 0 at MCA527
Byte offset 36 MCA channels unsigned short
Byte offset 38 Threshold [%] unsigned short See CMD_QUERY_STATE527 and
CMD_SET_THRESHOLD
Byte offset 40 LLD unsigned short
Byte offset 42 ULD unsigned short
Byte offset 44 ROI begin (preset integral/area) unsigned short
Byte offset 46 ROI end (preset integral/area) unsigned short
31 For general mode 3 and 4 (see CMD_SET_GENERAL_MODE), only PRESET_REAL is supported, PRESET_LIVE,
PRESET_INT and PRESET_AREA are unsupported and mean the same like PRESET_NONE.
32 Since firmware version 13.00.
33 Older applications for the MCS mode used the counts per channel to calculate the counts per second. However, this is inexact.
For this reason, since firmware version 13.00, the 'counts per second' for both modes are (additionally) returned at byte offset
116. Newer applications for the MCS mode should use this parameter.
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