Function
Read the general-purpose input.
Format
Ret = CntInputDIByte ( Id , Reserved , bData )
Parameters
Id
[ C: short ] [ Python: ctypes.c_short ]
Specifies the device ID retrieved from CntInit.
Reserved
[ C: short ] [ Python: ctypes.c_short ]
0 is specified.
bData
[ C: unsigned char * ] [ Python: ctypes.POINTER(ctypes.c_ubyte) ]
Specifies the address of variable which stores the general-purpose input
data.
Return Value
Ret [ C: long ] [ Python: ctypes.c_long ]
Definition |
Value |
Description |
CNT_ERR_SUCCESS |
0 |
Normal Complete |
CNT_ERR_DLL_INVALID_ID |
10001 |
Invalid ID is specified. |
CNT_ERR_DLL_CALL_DRIVER |
10002 |
Driver cannot be called (failed in ioctl). |
CNT_ERR_DLL_MODE |
10100 |
Invalid mode setting. |
CNT_ERR_DLL_BUFF_ADDRESS |
10101 |
Invalid data buffer address. |
The other errors: (See also: Details of Error Code)
Initial Value
None
Remarks
Reads the general-purpose
input.
CntReadStatus function can get the general-purpose input, but this function
is more convenient for only taking out the 8 bits of general-purpose input.
Example
C |
Ret
= CntInputDIByte(Id, Reserved, &bData); |
Python |
Ret
= ccnt.CntInputDIByte(Id, Reserved, ctypes.byref(bData)) |
See Also