Rockwell Automation 2755 AtomScan Bar Code Reader User Manual
Page 73
5–28
Configuring Your Reader
Publication 2755-6.9
Communications Commands
•
Protocol. If selecting one of the options from 0 to 4
(Point-to-Point, Point-to-Point with RTS/CTS, Point-to-Point
with XON/XOFF, Point-to-Point with RTS/CTS and
XON/XOFF, or Polling Mode D), use the format below.
Command
Parameter
Format
Example
Protocol
0 = Point-to-Point
1 = Point-to-Point with RTS/CTS
To change the Protocol to Polling Mode
2 = Point-to-Point with XON/XOFF
Kf
<Kfprotocol>
To change the Protocol to Polling Mode
D, press
[<Kf4>]
.
3 = Point-to-Point with RTS/CTS and XON/XOFF
[
]
4 = Polling Mode D
If selecting Multidrop (5), you must define an address and append
it to the command string. The address can be from 1 to 50.
Command
Parameter
Format
Example
Protocol
To change the Protocol to Multidrop with
5 = Multidrop
Kf
<Kfprotocol,address>
an address of 33, press
[<Kf5,33>]
.
If selecting User Defined (6) or User Defined Multidrop (7),
complete the format by either choosing new parameters or
concatenating unchanged data fields (separate by commas).
For User Defined, first select Point-to-Point <Kf0> and then User
Defined <Kf6...>. For user Defined Multidrop, first select
Multidrop <Kf5>, then User Defined Multidrop <Kf7...>.
Command
Parameter
Format
Example
Protocol
To select an unpolled ACK/NAK User
6 = User Defined
Kf
<Kfprotocol,RES,address,
REQ,EOT,STX,ETX,ACK,
Defined protocol with LRC disabled,
press
[<Kf0><Kf6,,,,,,,
^F ^U
K 0 ]
➀
7= User Defined Multidrop
NAK>
^F,^U><Kc0>]
➀
. ACK and NAK
will be displayed in the menu
➁
.
➀
<Kf0> nulls the address and <Kc0> disables LRC.
➁
A control character, represented here as two characters (^F or ^U, etc.), is actually a single ASCII
character that is entered on the keyboard by holding down the control key while pressing the
desired letter.
•
Preamble. You can enter one or two preamble characters except a
null (00H).
Command
Parameter
Format
Example
Status
To enable Preamble with just one
0 = Disabled
Kd
<Kdstatus,preamble
To enable Preamble with just one
character, an FF (form feed), press
1 = Enabled
Kd
character(s)>
character, an FF (form feed), press
[<Kd1,^L>]
.