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2-40 Return to Section Topics KPCI-488LPA-900-01 Rev. A / December 2008
Section 2: NI Command Compatible Functions Model KPCI-488LPA GPIB Controller Interface Card User’s Manual
Parameters board_desc : board ID
address : the device address of the device is waiting to be configured.
dataLine : data line on which the device responds to parallel polling; its range is from 1
to 8.
lineSense : senses the parallel polling response; its value is either 0 or 1.
Error Codes EARG, EBUS, ECIC, EDVR, EOIP, ENEB
PPollUnConfig
Description This command un-configures the devices to respond to parallel polling. If there is only
constant
NOADDR in the address list, addrlist, the Parallel Poll
Un-configure (PPU) GPIB message is sent to all GPIB devices. The devices
un-configured by this function will not be included in the following parallel polling.
Syntax Microsoft C/C++ and Borland C++
void PPollUnconfig (int board_desc,
const Addr4882_t addressList[])
Visual Basic
call PPollUnconfig (ByVal ud As Integer,
addressList ( ) As Integer)
Parameters board_desc : board ID
addressList : the list of the device addresses ended by NOADDR
Error Codes EAGR, EBUS, ECIC, EDVR, EOIP, ENEB
RcvRespMsg
Description This command reads data from a device. The RcvRespMsg function assumes that
the interface is in the listen-active status and addresses a device as a talker. The
function reads data continuously, until either "count" data have been read or the
terminal condition is detected. If the terminal condition is
DTOPend , the reading
action is stopped and the EOI line is set to enable while the STOPend is received.
Otherwise, the reading action is stopped while the eight-bit EOS character is detected.
Returns the actual number of transferred bytes in the global variable, ibcntl .
Syntax Microsoft C/C++ and Borland C++
void RcvRespMsg (int board_desc, void *buffer,
long count, int termination)
Visual Basic
call RcvRespMsg (ByVal ud As Integer, buf As String,
ByVal termination As Integer)
Parameters board_desc : board ID
buffer : the buffer for storing the read data
count : the number of read bytes
termination : the description of the data termination mode
Error Codes EABO, EADR, EARG, ECIC, EDVR, EOIP, ENEB