AioGetAiRange

Function

Retrieves the analog input range of each channel.

Format

Ret = AioGetAiRange ( Id, AiChannel , AiRange )

Parameters

Id [ C, C++ : short ] [ Python : ctypes.c_short ]
Specifies the Device ID retrieved from AioInit function.

AiChannel [ C, C++ : short ] [ Python : ctypes.c_short ]
Specifies the channel for that the analog input range is set.

AiRange [ C, C++ : short * ] [ Python : ctypes.POINTER(ctypes.c_short) ]
Specifies the address of the variable that stores the analog input range.

Range	Macro	Value
-10 to 10V	PM10	0
-5 to 5V	PM5	1
-2.5 to 2.5V	PM25	2
-1.25 to 1.25V	PM125	3
0 to 10V	P10	50
0 to 5V	P5	51
0 to 2.5V	P25	53
0 to 1.25V	P125	54
0 to 20mA	P20MA	100
4 to 20mA	P4TO20MA	101
-20 to 20mA	PM20MA	102
1 to 5V	P1TO5	150

Return value

Ret [ C, C++ : long ] [ 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 Use the Id retrieved from AioInit to specify the Id in this function.
10002	AIO driver can't be called At first, perform AioInit function.
11050	The value of AiChannel is outside the designated range of the function Specify the channel setting in range: 0 <= AiChannel <= Max channel.
11051	Pointer to AiRange is NULL Specify the address of variable to parameter.
20001	This function can't be used by this device
20002	Can not use while by another device works To use this function, analog input operation must be stopped
21040	The value of AiChannel is outside the designated range of the device being used

Initial value

It differs by the device type.
If the range is set by software, the initial value is the status when each device is powered on.
If the range is set by jumper, the initial value is the factory settings.

Remarks

This function cannot be used on devices without the analog input function.
If the device is in operation, the function cannot be performed.

Example

Retrieves the analog input range of channel 0.

C, C++	long Ret; short AiRange; Ret = AioGetAiRange ( Id , 0 , &AiRange );
Python	Ret = ctypes.c_long() AiRange = ctypes.c_short() Ret.value = caio.AioGetAiRange ( Id , 0 , ctypes.byref(AiRange) )