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1.8 CONFIGURING THE SUPPLIES

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dress of the Master Supply as its IEEE address.

Slave supplies must be given a unique address that is different than the address of the

Master supply. No two supplies may be given the same address. All Slave supplies must

be set for RS485 operation at 19,200 Baud transmission rate.

1.9 THE INTERFACE INPUT BUFFER

The Interface contains a 210 byte input buffer to save commands as they are received from

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and the command:

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The user may enter more than 1 concatenated command, separated by semicolons, to be

executed. The interface will process all commands before returning any data/status to the

IEEE bus or accepting any new commands to execute. Messages returned to the user will

be the result of the last command executed.

If a command error exists, or the Power Supply reports an error, all subsequent commands

in the buffer will be terminated and the status returned to the user.

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1.10 GETTING STARTED WITH THE SOFTWARE

A computer can use a variety of controllers, programs, and programming languages for the

IEEE bus. Here is an example showing a minimal program to set the voltage, set the cur-

rent and measure the voltage from a power supply.

1.10.1 EXAMPLE SESSION USING THE ‘IBIC’ CONSOLE

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exe). As the operator types each command on the computer, at the colon prompt, it is im-

mediately sent to the power supply. This example works only for computers with National

Instruments and compatible IEEE controller cards.

Win32 Interactive Control

Type ‘help’ for help or ‘q’ to quit.

: ibdev Controller address

enter board index: 0 Supply Address

enter primary address: 6

enter secondary address: 0

enter timeout: 12