Western Telematic CAS-81 manual Operation, Power Up, Ascii Characters, Command String, Examples

4.Operation

4.1. Power Up

The ON LED indicates that AC Power has been turned on. The RDY LED indicates that the processor is operating and the unit is READY to operate. A flickering RDY LED indicates an AC Power brown out condition. The Control Port Status LEDs indicate the signal status of the Control Port. The Serial Port LEDs indicate the port(s) selected. When all Serial Port LEDs are lit, this indicates that CAS-81's Broadcast Mode is active.

Upon power-up, the unit is programmed according to the parameters selected by the setup DIP switches, which are located next to the Control Port. (Refer to switch setup section). If you change any of the DIP Switch settings while the unit is powered on, you must turn power off and on to reread the switch.

4.2. ASCII Characters

The PC or controlling device connected to the Control Port must send ASCII characters at the same data rate as the CAS-81. The unit accepts 8 bits / no parity, or 7 bits / even parity.

4.3. Command String

The command string consists of seven contiguous characters. The first 6 characters are ASCII Control codes, and the seventh is the configuration code.

^V^X^X^V^X^Xn (Command String)

Where:

n = 0	Disconnects
n = 1 - 8	Selects Serial Port Number 1 through 8
n = 9	Enables Broadcast Mode (Select All Serial Ports)

Note that if "n" equals any character other than 0 through 9, the command will be terminated.

Examples:

To select port 3, send the following command:

^V^X^X^V^X^X3

To disconnect, send the following command:

^V^X^X^V^X^X0

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