Operator`s manual

Signametrics 46
Negative Value
Error code
Example int status = SCANOpenPCI(0);
SCANReady
H/W access Command  Polled Command 
Description Return the ready state of the Scanner following a polled operation.
#include “SMX4032.H”
int SCANReady(int iScan)
Remarks Following the completion of long or complex polled commands, the scanner indicates it
is ready to accept a new command by issuing a task complete message. Functions
requiring the use of the SCANReady() command include; SCANSelectChannelCmd(),
SCANAutoScan(), SCANTrigAutoScan(), SCANTrigScan(), and
SCANCleanRelays(). The SCANReady() function checks returns TRUE if ready, and
FALSE otherwise. Once a TRUE status is returned, the SCANMMReady() function
should not be used again until a new polled command requires it.
Parameter
Type/Description
iScan
int Identifies the Scanner. Scanners are numbered starting with zero.
Return Value The return value is one of the following constants.
Value
Meaning
TRUE
(=1) Scanner is done and ready to accept new commands.
FALSE
(=0) Scanner is not ready.
Negative Value
Error code
Example double Buffer[10];
SCANAutoScan(0,10);
while( ! SCANReady(0) );
for(i=0; i < 10 ; i++) Buffer[i] = SCANReadBuffer(0);
SCANSelectChannel
H/W access Command  Polled Command 
Description Select channel command.
#include “SMX4032.H”
#include “ScanUser.H”
int SCANSelectChannel(int iScan, int iChan)
Remarks This is the primary channel selection function for the multiplexed configurations of the
scanner. It opens currently closed channel(s) in a configured group and then closes
iChan. Depending on the current configuration, it will open and close a different number
of relays. In TwoWire configuration, all relays open prior to closing the iChan. If the
Scanner is in the FourWire configuration, the iChan value can be between 1 and 16. In
addition to opening the currently closed channels, it will close the two channel relays in
accordance with the FourWire switching scheme. Configuration relays will also be set as