Sets the level when the Level comparison
is started. The level is stored in Voltage or Current.
This settings is necessary when the conversion start condition that is
set by AioSetAiStartTrigger function is the level comparison.
It isn't necessary to be set except for the conversion start condition
is the level comparison.
Only one level comparison setting can be set for one device. If specified multiple times, only the last data is valid.
Ret = AioSetAiStartLevelEx ( Id , AiChannel , AiStartLevel , AiDirection )
Id
[ VB.NET : Short ] [ C, C++ : short ] [ C# : short ] [ Python : ctypes.c_short
]
Specifies the ID retrieved from AioInit function.
AiChannel
[ VB.NET : Short ] [ C, C++ : short ] [ C# : short ] [ Python : ctypes.c_short
]
Specifies the channel that performs the level comparison.
AiStartLevel
[ VB.NET : Single ] [ C, C++ : float ] [ C# : float ] [ Python : ctypes.c_float
]
Sets the data that performs the level comparison in Voltage or Current.
AiDirection
[ VB.NET : Short ] [ C, C++ : short ] [ C# : short ] [ Python : ctypes.c_short
]
Sets the direction of the level comparison from the following range.
0 |
Both edges |
1 |
Rising edge |
2 |
Falling edge |
Ret [ VB.NET : Integer ] [ C, C++ : long ] [ C# : int ] [ Python : ctypes.c_long ]
Return values |
Content |
0 |
Normality completion |
7 |
Execute AioResetDevice function because the device has recovered from standby mode |
10001 |
Invalid
Id was specified |
10002 |
AIO
driver can't be called |
11920 |
The
value of AiChannel is outside the designated range of the function |
11921 |
The
value of AiDirection is outside the designated range of the function |
20001 |
This function can't be used by this device |
20002 |
Can
not use while by another device works |
20003 |
Can
not use because another process is using the device |
21920 |
The value of AiChannel is outside the designated range of the device being used |
21921 |
The value of AiStartLevel is outside the designated range of the device being used |
21923 |
The value of AiDirection is outside the designated range of the device being used |
In all devices, AiChannel = 0, AiDirection = 0
Resolution of device is 12 bit |
AiStartLevel = Voltage or Current value equals to 800H in binary value |
Resolution of device is 16 bit |
AiStartLevel = Voltage or Current value equals to 8000H in binary value |
This function cannot be used on devices without
the analog input function.
If the device is in operation, the function cannot be performed.
Starts channel 0 by the
level comparison.
Level data is 5.0V, Level direction is both edges.
VB.NET |
Dim
Ret As Integer |
C, C++ |
long
Ret; |
C# |
int
Ret; |
Python |
Ret
= ctypes.c_long() |