Infratec™ 1241 Grain Analyzer
Service Manual 1001 5015 / Rev. 4 2:21
Hardware
The hardware of the I/O Board is basically an I²C controlled 8 bit I/O expander where
2 pins are allocated as outputs (IO0, IO1) and 6 pins as inputs (IO2-IO7). All I/O:s
are protected with opto-couplers and the external part of the opto-couplers are
powered with 12/24V from the outside.
One pin on the connector is connected to the Infratec 1241/1256 12V supply to
enable connection of an external sensor without extra hardware.
Software
The functionalities for the I/O Board require at least ISW 3.40. In this version there
are however some bugs regarding the statuses 'Busy' (not reported correct at all
times) and 'Connected' (not enabled). This will be fixed in ISW 3.41 that will be
released in 2006.
Fig. 2:16
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