Operator`s manual

47 Signametrics
Description Set relay actuation time value
#include “SM4040.H”
int SCANSetActuationTime(int iScan, double dActuate)
Remarks This function sets the actuation time value to the scanner. The actuation time is the time
it takes the scanner to select and deselect all relays. The default actuation time is set to
10mS. The allowed range is from 0.25ms to 800ms. The resolution is about 0.25ms.
Parameter Type/Description
iScan
int Identifies the Scanner. Numbered starting with zero.
dActuate
double Sets the actuation time. Allowed value is between 0.25ms to
800ms.
Return Value The return value is one of the following constants.
Value Meaning
SCAN_OKAY
Function succeeded.
Negative Value
Error code
Example status = SCANSetActuationTime(0, 0.05); // Set to 50ms
SCANSetChannelRelay
H/W access Command ; Polled Command 
Description Close or open a channel relay.
#include “SM4040.H”
#include “ScanUser.H”
int SCANSetChannelRelay(int iScan, int iState, int iChan)
Remarks This function provides means to close or open individual channel relays while the
Scanner is in the Universal configuration. Issuing this command causes a single relay to
open or close, with an actuation time of tActuation. In the Universal configuration,
multiple channel relays can be closed. With iState set to OPEN, open the iChan relay.
Close it if iState is set to CLOSE. See ScanUser.H for definitions. See also
SCANSetConfigRelay function.
Parameter Type/Description
IScan
int Identifies the Scanner. Numbered starting with zero.
IState
int Closes a channel relay if equal to CLOSE, opens it if OPEN.
(OPEN = ‘O’ or 0X4F and CLOSE = ‘C’ or 0X43)
IChan
int Channel number Range: 1 to 40 depending on Scanner type
Return Value Integer error code.
Value Meaning