Mitsubishi Electric MELIPC MI5000 Series User Manual page 112

System clock rate operation function
This function changes the system clock rate of the VxWorks part of this product.
For details on the system clock rate, refer to the VxWorks Manual.
System clock rate setting
Use the following C Controller module dedicated functions to configure the system clock rate: (CCPU_SysClkRateSet) and
(CCPU_SysClkRateGet).
■Function list
Function name
CCPU_SysClkRateGet
CCPU_SysClkRateSet
For details on the C Controller module dedicated functions, refer to the following manual.
MELIPC MI5000 Series Programming Manual (VxWorks)
Precautions
■System clock rate changes
Use the C Controller module dedicated function (CCPU_SysClkRateSet) to change the system clock rate. If this command
(sysClkRateSet) is used to change the system clock rate of VxWorks, the operation of the VxWorks part will be unstable.
■Timing of system clock rate changes
Changes of the system clock rate are enabled after a restart of the VxWorks part of this product. To change the system clock
rate, always turn the power supply of this product OFF and ON or reset this product.
■System clock rate during operation
The value obtained by the C Controller module dedicated function (CCPU_SysClkRateGet) is the value configured by the C
Controller module dedicated function (CCPU_SysClkRateSet). This may be different than the actual operating system clock
rate. Use the command (sysClkRateGet) of VxWorks to check the system clock rate during operation.
8 DIAGNOSTIC AND MAINTENANCE FUNCTIONS
110
8.3 Operating Status Management Function
Description
Reads the system clock rate specified with the CCPU_SysClkRateSet function.
Stores the specified system clock rate in the non-volatile memory.