Chapter-5
Interface
NLV-5201 User's Manual
51
1st
<CTS, TxD signal timing>
When the CTS line (RTS signal on the host side) is turned off during a TxD signal transmission, the
scanner stops the transmission. When the CTS signal is turned on during signal transmission,
characters will be transmitted.
The following menu codes / commands are provided for the CTS line timeout setting.
"Z2" (save settings in non-volatile memory) needs be used after these commands to activate and save
the new configuration.
Item
Command
Description
Default
Remark
CTS
timeout
I0
Flow Control timeout Indefinitely
Enabled only with “Z2”
I1
Flow Control timeout 100 ms
I2
Flow Control timeout 200 ms
I3
Flow Control timeout 400 ms
C) MODEM
The scanner’s RTS is OFF as soon as power is supplied to the scanner. The scanner will turn RTS
ON when it wants to transmit data to the host. The host should respond with CTS ON when it is ready
to receive data. While the host CTS is ON the scanner is allowed to transmit data. When all data has
been transmitted, the scanner will turn RTS OFF. In response, the host should turn OFF the scanner’s
CTS. If, while RTS is ON, the CTS line is not ON for a certain configurable period, the scanner will
terminate the transmission with an error indication of the buzzer.
CTS
TxD
n-1
n
n+1 n+2
TxD
CTS
RTS
Transmit Data
Scanner
Host System
CTS
RTS
RxD
Decode
Finish
Wait to
Send
Send
Wait to
Send
Send
Software
Buzzer
