References; Rs232 Parameters; Handshaking - Datalogic TC1100 Reference Manual

4
4

REFERENCES

4.1

RS232 PARAMETERS

4.1.1

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.
Signals at
EIA levels
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.
34
RTS
TX
CTS
Figure 31 - RTS/CTS handshaking
Transmitted data
TX
RX
Host busy
Figure 32 - XON/XOFF handshaking
Transmitted data Transmitted data
Host busy
Transmitted data
XOFF XON
Host ready
TC1100