Function
Starts the count operation of specified channel. Supports multi-processing.
Format
Ret = CntStartCount ( Id , ChNo , ChNum )
Parameters
Id
[ VB.NET: Short ] [ C, C++: short ] [ C#: short ] [ Python: ctypes.c_short
]
Specify the device ID retrieved from CntInit.
ChNo
[ VB.NET: Short ] [ C, C++: short * ] [ C#: out short ] [ Python: ctypes.POINTER(ctypes.c_short)
]
Specify the base address of array storing the starting channel number.
ChNum
[ VB.NET: Short ] [ C, C++: short ] [ C#: short ] [ Python: ctypes.c_short
]
Specify the number of channels in array ChNo.
Return Value
Ret [ VB.NET: Integer ] [ C, C++: long ] [ C#: int ] [ Python: ctypes.c_long ]
Definition |
Value |
Description |
CNT_ERR_SUCCESS |
0 |
Normality completion |
CNT_ERR_SYS_RECOVERED_FROM_STANDBY |
7 |
Execute the function CntResetDevice to return from the standby mode. |
CNT_ERR_DLL_INVALID_ID |
10001 |
Invalid ID was specified. |
CNT_ERR_DLL_CALL_DRIVER |
10002 |
CNT driver can't be called (Failed in the device I/O control). |
CNT_ERR_DLL_BUFF_ADDRESS |
10101 |
Invalid data buffer address. |
CNT_ERR_SYS_BOARD_EXECUTING |
20002 |
Cannot use while by another device works. |
CNT_ERR_SYS_CH_NO |
20201 |
Channel number is out of range. |
CNT_ERR_SYS_CH_NUM |
20202 |
Number of channels is out of range. |
The others: (See also: Details of Error Code)
Initial Value
None
Remarks
Starts the count operation of specified channel. Passes the channel number in array. The mode that is set before the counter starts is set, when this function is called.
For the device without sampling function, the preset value that is set before the counter starts is set, when this function is called.
Example
Starts the count operation of channel 0 and 1.
VB.NET |
Dim Ret As Integer |
C, C++ |
long Ret; |
C# |
int Ret; |
Python |
Ret = ctypes.c_long() |
See Also