Rockwell-automation 1747-PCIS API Software - Open Controller Manual de usuario descargar pdf (Pagina 95)

Publication 1747-UM002A-US-P - June 2000

Library of Routines 6-35

Return Value:

Considerations:

Supported in the DOS API library and the Windows NT API library

Example:

HANDLE Handle;

BYTE sw_pos;

int retcode;

retcode = OC_GetSwitchPosition( Handle, &sw_pos );

if ( sw_pos == SWITCH_BOTTOM )

OC_SetScanMode ( Handle, SCAN_IDLE );

OC_GetTemperature

OC_GetTemperature reads the current temperature of the 1746 I/O

PCI Interface’s built-in thermometer.

Syntax:

int OC_GetTemperature(HANDLE handle, BYTE*temp);

Parameters:

Description:

The temperature is updated every 10 seconds by the scanner.

The optimal operating temperature range for the 1746 I/O PCI

Interface is 0° to 60°C. When OC_GetTemperature returns a value of

75_ C or higher, the 1746 I/O PCI Interface is operating beyond its

optimal operating temperature range and you need to correct the

situation.

The scanner must be initialized before you can monitor the

temperature.

Name: Value: Description:

SUCCESS 0 switch position was read successfully

ERR_OCACCESS 2

handle does not have access to scanner

ERR_OCINIT 5 scanner has not been initialized, see OC_InitScanner

Parameter: Description:

handle Must be a valid handle returned from OC_OpenScanner

temp Returns the temperature in degrees Celsius

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Rockwell-automation 1747-PCIS API Software - Open Controller Manual de usuario Pagina 95