Rockwell Automation 2755 StrataSet Programming Software - Manual (Page 29)

2–18 Configuring your Reader
Publication 2755-6.14
RS232 Type Description
Data Format Odd
Select odd to make the parity bit either a 0 or 1, to guarantee
an odd number of ones.
Space Select space to make the parity bit always 0.
Even
Select even to make the parity bit either a 0 or 1, to guarantee
an even number of ones.
Mark Select mark to make the parity bit always 1.
None Select none and the parity bit time is skipped.
7 or 8 Data Bits
Select between 7 and 8 data bits per data byte, depending on
the requirements of your host.
1 or 2 Stop Bits
Select between 1 and 2 stop bits per data byte, depending on
the requirements of your host.
Note: The StrataScan line of Readers supports either 10 or 11 bit
data words. You cannot choose a data byte format that is not either
10 or 11 data bits total (including 1 start bit). For example, you
cannot select 7 data bits, 1 stop bit and no parity, since this would
constitute a 9-bit data byte. You cannot choose 8 data bits, 2 stop
bits and a parity bit, since this would constitute a 12-bit data byte,
including 1 start bit.
Further RS232 Options
RS232 Type Description
Options Reserved 1 This option is reserved for future use.
Reserved 2 This option is reserved for future use.
ACK/NAK
After a bar code is scanned and transmitted, if ACK/NAK is
enabled, the reader waits for one of several host character
commands to be sent from the host. If the host sends an ACK
(06H) acknowledge command, the reader beeps and resumes
scanning. If the reader receives a NAK (15H) negative
acknowledge command, the reader re-transmits the bar code
without a beep and does not resume scanning.
CR
When this option is enabled, the reader transmits a Carriage
Return after each bar code.
LF
When this option is enabled, the reader transmits a Line Feed
after each bar code.
DTR Support
When this option is enabled, the reader requires a Data
Terminal Ready (DTR) signal to be present before scanning.