Com port parameters, Handshaking, See par. 4.2.1 – Datalogic Scanning DL Cordless Card DLCC User Manual

Page 34: 2 com port parameters, 1 handshaking

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DL CORDLESS CARD™

4.2 COM PORT PARAMETERS

4.2.1 Handshaking

Modem: (RTS/CTS)

DLCC deactivates the RTS line when it cannot receive a character from the Host.
DLCC can transmit data only if the CTS line (controlled by the Host) is active.

Received data

RTS

Modem busy

Signals at
EIA levels

DLCC™ Side

Host Side

Transmitted data

CTS

Host busy

DLCC™ Side

Host Side

Signals at
EIA levels

Modem RTS/CTS Handshaking