Parity; Stop Bits; Flow Control - Intermec EasyCoder 601 XP Installation And Operation Manual

Setup Parameters,
Serial Communication,
cont'd.
Intermec EasyCoder 601 XP – Installation & Operation Ed. 3
cont'd.

Parity

The parity decides how the software will check for transmision er-
rors. There are five options:
• None (default)
• Even
• Odd
• Mark
• Space

Stop Bits

The number of stop bits specifies how many bits will define the end
of a character. There are two options:
• 1 (default)
• 2

Flow Control

• RTS/CTS
RTS/CTS is a protocol where the communication is controlled by
currents through separate lines in the cable being set either to high
or low. By default, this option is disabled.
RTS high indicates that the transmitting unit is able to receive
characters. RTS low indicates that the receive buffer is filled to
75% (see XON/XOFF).
CTS high indicates that the unit transmitting the CTS signal is
ready to receive data. CTS low indicates that the receive buffer is
full (see XON/XOFF). In some computer programs, e.g. MS
Windows Terminal, RTS/CTS is designated "Hardware".
RTS/CTS cannot be selected for any kind of RS 422 communi-
cation on "uart2:".
• ENQ/ACK
In this protocol, the communication is controlled by the special
characters ENQ (ASCII 05 dec.) and ACK (ASCII 06 dec.) being
transmitted on the same line as the data. The sending unit
transmits ENQ at regular intervals. If the response ACK is not
received the transmission is held up awaiting an ACK character
from the receiving unit. By default, ENQ/ACK is disabled.
Chapter 7 Setting Up the Printer
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