RS232 interface in transparent
mode (COM 1/2/3)
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“SysComRead” function
Data received via the RS232 interface in transparent mode can be
read with this function.
Table 17: Parameters of the “SysComRead” function
Figure 92: SysComRead function
dwHandle
Return value of the “SysComOpen” function
SysComClose
Return value TRUE: Closing of 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
Parameter without meaning
SysComRead
Return value: Informs you about the number of read data bytes.
h
Caution!
Test of the buffer address or the buffer size does not occur!
Summary of Contents for XC200 Series
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