Rockwell-automation 2711P Software Development Kit User Manual Manual de usuario descargar pdf (Pagina 63)

Publication 2711P-UM005A-EN-P - March 2007

PanelView Plus CE-Specific Extensions to the WinCE API 63

Remarks:

Note that monitor parameters will vary with time, and may oscillate

about a defined upper or lower warning level for a short period.

Therefore, when a warning state event has been triggered, the calling

application should poll the warning status of any monitor sources of

concern (using hm_GetMonitorWarnings) to ensure that the monitor

source remains in a warning state before acting. Note also that to

avoid oscillating events, due to lots of input hysteresis, the hardware

monitor driver will not signal an event when a monitor source leaves

the warning state. Applications must poll the device’s warning state to

determine when/if it resumes normal operation.

Portability:

The function prototype is the same as the RAC6182. However, the

MONITOR _ID parameters are different between the platforms.

Requirements:

hm_SetMonitorWarningLevels

This function sets the high and low warning levels for a specific

monitored parameter.

BOOL hm_SetMonitorWarningLevels (DWORD dwMonitorID,

DOUBLE IfUpperWarningLevel, DOUBLE IfLowerWarningLevel);

Parameters:

dwMonitorID

A value from Table .

lfUpperWarningLevel

Double precision floating-point value that defines the upper bound of

the monitor parameter during normal operation. If

MONITOR_WARNING_LEVEL_UNDEFINED is specified, the upper

bound is undefined and not used to determine if the parameter enters

the warning state. This is a requirement for some parameters. See

Remarks.

Runs On Version Defined In Link To

PanelView Plus CE

RAC6182

All HardwareMonitorAPI.h HardwareMonitor.lib

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Rockwell-automation 2711P Software Development Kit User Manual Manual de usuario Pagina 63