Datalogic Scanning 90ACC1780 Manuale Utente

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GRYPHON™ 
116 
 
5 REFERENCES 
 
 
5.1 RS232 
PARAMETERS 
 
5.1.1 Handshaking 
 
Hardware handshaking: (RTS/CTS) 
The RTS line is activated by the decoder before transmitting a character. 
Transmission is possible only if the CTS line (controlled by the Host) is active. 
RTS
Transmitted data
Transmitted data
TX
CTS
Host busy
Signals at
EIA levels
 
RTS/CTS handshaking 
 
 
Software handshaking: (XON/XOFF) 
During transmission, if the Host sends the XOFF character (13 Hex), the decoder 
interrupts the transmission with a maximum delay of one character and only 
resumes when the XON character (11 Hex) is received. 
Host ready
Host busy
XON
XOFF
RX
Transmitted data
Transmitted data
TX
 
XON/XOFF handshaking