Intermec SR60 Reference Guide

Review your system documentation to identify handshaking 
requirements, and scan the following bar codes to change the 
settings if required. The following descriptions briefly explain 
each selection.

You can choose either CTS/RTS Flow Control or CTS Scan 
Control:

• CTS/RTS Flow Control is a type of hardware handshaking. 

The scanner activates the RTS (Request to Send) line when it 
is ready to send data to the host. The scanner waits for an 
active Clear to Send (CTS) signal from the host before 
transmitting data. If hardware control is disabled, CTS/RTS 
communication does not take place. If the host deactivates the 
CTS line during data transmission, the host receives 
additional characters for no more than 2 ms. (The timing 
varies slightly, depending on the baud rate you select.)

• CTS Scan Control is a type of hardware handshaking. When 

scan control is enabled, label scanning is disabled until CTS is 
asserted and de-asserted, as shown in the next illustration.

Handshaking controls are mutually exclusive. You cannot enable 
more than one of these features at a time, because enabling 
multiple controls produces unpredictable results.

Label Transmission

Label Transmission

Xmission

CTS

Data

Active

Disabled

Inactive

Label 1

Label 2

Label 1

CTS

Data

Assert

Will not scan again
until toggled

De-assert

Disabled until