3.
Installation
3.1.
Configure SetUp Switches
There are two banks of DIP switches located on the bottom of the
CAS-161A unit. These switches are used to configure the Prefix
Code (command character), enable the Broadcast Mode, and
select the baud rate. Switch functions are summarized on the
bottom of the unit and in the sections that follow:
Note:
Switch positions “1” and “0” are indicated on
the bottom of the unit.
3.1.1.
SetUp Switch Bank 1
The bank of switches located closest to the rear panel are used to
select the Prefix Code Repetition Value, Broadcast Mode, and
baud rate.
3.1.1.1.
Prefix Code Repetition Value (Sw1 - Sw4)
The Prefix Code informs the unit that the next character will be a
command. In order to allow the unit to adapt to a variety of
applications, it is often useful to require that the Prefix Code be
repeated several times in order to be recognized. For example if
the Prefix Code is
^V
and the Repetition Value is 4, then the
sequence “
^V^V^V^V
” would be sent prior to a port selection
command.
Note:
When transmitting binary data, it is
recommended that the Repetition Value be set at four
or eight. This will decrease the possibility of random
characters in data being misinterpreted as commands.
Prefix Code Repetition
Switch (Bank 1)
1
2
3
4
1 x Prefix Code *
1
0
0
0
2 x Prefix Code
0
1
0
0
4 x Prefix Code
0
0
1
0
8 x Prefix Code
0
0
0
1
* = Factory Setting
3-1
Summary of Contents for CAS-161A
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