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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)
1234
* = Factory Setting
3.1.1.2. Broadcast Mode (Sw5)
On (1) forces all ports open. Data from the Control (MODEM) port is sent to all Input ports.
Useful for broadcasting to or controlling all Input devices. When enabled, concurrent data sent
by Input ports to the Control port will be jumbled together.
Broadcast Mode Sw5
* = Factory Setting
3-1