Programming Over RS-232-C

RS-232-C Bus Addressing

 

The controller and the HP 16500C Logic Analysis System must be in the

 

same bit mode to properly communicate over the RS-232-C. This means that

 

the controller must have the capability to send and receive 8-bit data.

See Also

For more information on the RS-232-C interface, refer to the HP 16500C

 

Logic Analysis System User’s Reference. For information on RS-232-C

 

voltage levels and connector pinouts, refer to the HP 16500C Logic Analysis

 

System Service Guide.

RS-232-C Bus Addressing

The RS-232-C address you must use is dependent on the computer or controller you are using to communicate with the Logic Analysis System.

HP Vectra Personal Computers or compatibles

If you are using an HP Vectra Personal Computer or compatible, it must have an unused serial port to which you connect the Logic Analysis System’s RS-232-C port. The proper address for the serial port is dependent on the hardware configuration of your computer. Additionally, your communications software must be configured to address the proper serial port. Refer to your computer and communications software manuals for more information on setting up your serial port address.

HP 9000 Series 300 Controllers

Each RS-232-C interface card for the HP 9000 Series 300 Controller has its own interface select code. This code is used by the controller for directing commands and communications to the proper interface by specifying the correct interface code for the device address.

Generally, the interface select code can be any decimal value between 0 and 31, except for those interface codes which are reserved by the controller for internal peripherals and other internal interfaces. This value can be selected through switches on the interface card. For example, if your RS-232-C interface select code is 9, the device address required to communicate over the RS-232-C bus is 9. For more information, refer to the reference manual for your interface card or controller.

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