Infratec™ 1241 Grain Analyzer
4:40 Service Manual 1001 5015 / Rev. 4
Power Supply Module (PSM) commands
The PSM has an I
2
C expander on board that is accessed from the DSP and is used to
set the values of the display, lamp and backlight controls.
Support for new Power Supply Unit (PSU) was implemented 2002-10. The new PSU
is identified with a '0' in bit four of the PSM byte and the PSU has got new
functionality such as 63 steps for display contrast and the ability to measure all
voltages on the board.
Sample Transport Module (STM) commands
The communication between the DSP and the STM is done via an I
2
C bus interface
to the STM board PIC microcontroller.
Electronic ID Module (EID) commands
The communication between the DSP and the EID is done via an I
2
C bus interface
to the EID board PIC microcontroller.
Power Supply Unit Commands
Id (hex) Specification Action
0501 SetContrast Set LCD display backlight to specified value
0502 SetDisplay Set display on/off
0503 SetLamp Set monochromator lamp on/off
0504 SetBacklight Set display backlight on/off
0505 GetByte Get current PSM status
0506 GetVoltages Get all PSM voltages
Sample Transport Module Commands
Id (hex) Specification Action
0601 GetSTMStatus
0605 LoadSTMCell
Put Cell in first scan position (i.e. lowest
position)
0606 UnloadSTMCell Terminate, release Cell
0608 MoveSTMCell Move the Cell max no of subsamples
0612 CheckSTMCell Verify that a Cell is in reference scan position
0613 GetSTMVersion Get STM version number
0615 RunSTMMotor Activates motor: Off, Up or Down
0616 GetSTMSensor Reads: Cup up, speed and cup down
Electronic ID Commands
Id (hex) Specification Action
0701 GetEIDNumber Get electronic ID data.
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