Foss Infratec 1241, Руководство по обслуживанию

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Infratec™ 1241 Grain Analyzer
4:38 Service Manual 1001 5015 / Rev. 4
Monochromator module commands
The communication between the DSP and the Monochromator module is done via an
I
2
C bus interface to the Monochromator board PIC microcontroller. The
Microcontroller handles the filter/shutter movement and the onboard E
2
PROM,
which can be accessed from the ISW.
The lower part of the command 'Id' is sent to the monochromator microcontroller
along with its parameters to be decoded.
Detector module commands
The detector module has an I
2
C expander on board that is accessed from the DSP and
is used to set the detector gain to values specified by the ISW. It also has a
temperature sensor from which ISW reads current temperature inside the detector
and it's accessed via the I
2
C IF as well.
An E
2
PROM onboard the detector module contains the detector constants (e.g. serial
number). These values are read/written in 4 byte packages with their page number
specified. The I
2
C expander also contains the write enable to the E
2
PROM.
Measuring Unit (MU) commands
The communication between the DSP and the MU is done via an I
2
C IF to the MU
board PIC microcontroller. There is also a temperature sensor at the MU PCB which
also is accessed via the I
2
C IF.
Monochromator Commands
Id (hex) Specification Action
0101 GetFilterPosition Read current filter position
0102 SetFilterPosition Set filter position
0103 GetMonochPage
Read the value at a specified page in E
2
PROM.
0104 SetMonochPage
Store the value at the specified page in
E
2
PROM.
0105 GetMonochVersion Reads the monochromator firmware version
Detector Commands
Id (hex) Specification Action
0201 SetGainValue Set new gain value
0202 GetGainValue Read current gain value
0203 GetDetPage
Read the value at a specified page in the
E
2
PROM.
0204 SetDetPage
Store the value at the specified page in the
E
2
PROM.
0205 GetDetTemp Reads current temperature
Measuring Unit Commands
Id (hex) Specification Action
0301 GetMUStatus
0304 SetMUInitial