RS232 interface in transparent
mode (COM 1/2/3)
03/05 AWB2724-1453G
64
“SysComRead” function
Data received via the RS232 interface in transparent mode can be
read with this function.
Table 16: Parameters of the “SysComRead” function
Figure 91: SysComRead function
dwHandle
Return value of the “SysComOpen” function
SysComClose Return value TRUE: closing the RS232 interface was successful
dwBufferAddress Address under which the read data is stored
dwBytesToRead Limitation of the max. number of data bytes
(COM 1: max. 190 bytes; COM 2 + 3: max. 250 bytes)
dwTimeout Parameters without meaning
SysComRead Return value: Informs you about the number of read data bytes.
h
Important
Test of the buffer address or the buffer size does not occur!
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