Function
Retrieves the one-shot pulse width. Supports multi-processing.
Format
Ret = CntGetPulseWidth ( Id , ChNo , PlsWidth )
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#: short ] [ Python: ctypes.c_short
]
Specify the channel number for retrieving.
PlsWidth
[ VB.NET: Short ] [ C, C++: short * ] [ C#: out short ] [ Python: ctypes.POINTER(ctypes.c_short)
]
Specify the address of the variable that stores the coefficient of one-shot
pulse width.
The following table shows the coefficients and pulse width.
Coefficient |
Pulse Width |
0h |
0 |
1h |
Approx. 409.6us |
2h |
Approx. 819.2us |
3h |
Approx. 1.23ms |
4h |
Approx. 4.92ms |
5h |
Approx. 10.24ms |
6h |
Approx. 20.07ms |
7h |
Approx. 29.9ms |
8h |
Approx. 40.14ms |
9h |
Approx. 49.97ms |
Ah |
Approx. 60.2ms |
Bh |
Approx. 70.04ms |
Ch |
Approx. 80.28ms |
Dh |
Approx. 90.11ms |
Eh |
Approx. 100.35ms |
Fh |
Approx. 104.45ms |
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. |
The others: (See also: Details of Error Code)
Initial Value
0
Remarks
Retrieves the the one-shot pulse width of count match. For the device with sampling function, please use CntGetOutputHardwareEvent.
Example
Retrieves the one-shot pulse width of channel 0.
VB.NET |
Dim Ret As Integer |
C, C++ |
long Ret; |
C# |
int Ret; |
Python |
Ret = ctypes.c_long() |
See Also