Users Manual - Warranty Life

Chapter 10 Communication
10.1 RS-232C Interface
The scanner uses asynchronous data transmission and communicates with the connected host computer or external
equipment via the RS-232C. You may set various communications conditions using the bar-coded parameter menu or
configuration software (ScannerSetting). Bar code data read is transferred in the following format.
(1) Communications protocol
You can select either non-acknowledge mode or ACK/NAK mode.
Non-acknowledge mode (default)
If the CTS signal is at a high level (Enable transmission), the scanner transmits bar code data read.
Note: The configuration software provides CTS timeout settings from 100 ms to 9.9 s in 0.1-second increments.
ACK/NAK mode
If the CTS signal is at high level (Enable transmission), the scanner transmits bar code data read. After that, the
scanner waits for and then processes a response. If the response is an ACK, the scanner normally ends the
transmission; if it is a NAK, the scanner transmits the bar code data again.
Note: The configuration software provides independent CTS timeout and response settings from 100 ms to 9.9 s in
0.1-second increments.
(2) RTS signal control protocol
You can select either the scanner ready mode or the data ready mode.
Scanner ready mode (default)
The RTS signal goes High and stays at a high level when the scanner is ready to communicate at power on. Make sure
that the RTS signal is at a high level when transmitting a command from the host to the scanner.
Data ready mode
The RTS signal goes High before the scanner transmits data to the host and goes Low after the data transmission is
completed.
Commands can be transmitted from the host to the scanner regardless of the level of the RTS signal.
However, there is a short time when commands cannot be transmitted to the scanner after power has been turned on.
(3) CTS signal monitor
The configuration software ScannerSetting provides two choices of the CTS signal monitor--enable or disable.
Enabling the CTS signal monitor does not output data when the RTS signal at the host is disabled.
(4) Transmission speed
There are six transmission speeds available, ranging from 1200 bps to 38,400 bps (default: 9600 bps).
(5) Characters
Characters that the scanner transfers are all ASCII codes. The frame format has the following parameters.
Data bits: 7 bits or 8 bits (default)
Parity: Odd, Even, or None (default)
Stop bits: 1 bit (default) or 2 bits
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