Kibsplw; Kspcfg - Keithley 4200A-SCS Reference Manual

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Section 13: LPT library function reference

kibsplw

This command synchronously serial polls an instrument connected to the GPIB interface.

int kibsplw(int pri_addr, int sec_addr, unsigned int timeout, int

*serial_poll_byte);

serial_poll_byte

This command waits for SRQ to be asserted on the GPIB by any device. After SRQ is asserted, a

serial poll sequence is initiated for the device and the serial poll status byte is returned.

The kibsplw command does the following:

1. Waits with timeout for general SRQ assertion on the GPIB.

2. Calls the kibspl command.

(on page 13-27)

This command configures and allocates a serial port for RS-232 communications.

int kspcfg(int port, int baud, int databits, int parity, int stopbits, int

The primary address of the instrument (2 to 31)

The secondary address of the instrument (1 to 31; if the instrument device does not

support secondary addressing, this parameter must be −1)

The GPIB polling timeout in 100 ms units (for example, a timeout of 40 = 4.0 s)

The serial poll status byte variable name returned by the device presently being

The RS-232 port to be used; only port 1 is supported

The transmission rate to be used; valid rates are 2400, 4800, 9600, 14400, and

The number of data bits to be used; valid inputs are 7 or 8 bits

Determines whether or not parity bits will be transmitted; valid inputs are: 0 (no

parity), 1 (odd parity), or 2 (even parity)

Sets the number of stop bits to be transmitted; 1 or 2

Determines the type of flow control to be used: 0 (no flow control), 1 (XON/XOFF

flow control), or 2 (hardware)

Model 4200A-SCS Parameter Analyzer Reference Manual

4200A-901-01 Rev. C / February 2017