Device Profile Area
CAN-CBX-AI420
Manual • Doc.-No.: C.3030.21 / Rev. 1.4
Page 87 of 103
7.10.9 Analog Input Interrupt Delta (6426
h
)
Index
Sub-
index
Description
Value range
Default
Data type
Access
mode
6426
h
0
Number_of_Analog_Inputs
4
4
unsigned 8
ro
1
Analog_Input_IRQ_Delta_1
0...FFFFFFFF
h
0
unsigned 32
rw
2
Analog_Input_IRQ_Delta_2
0...FFFFFFFF
h
0
unsigned 32
rw
3
Analog_Input_IRQ_Delta_3
0...FFFFFFFF
h
0
unsigned 32
rw
4
Analog_Input_IRQ_Delta_4
0...FFFFFFFF
h
0
unsigned 32
rw
In this object the difference value of the analog input voltage (Delta), which can be evaluated for
triggering the interrupt, is defined. Via object 6421
h
the type of evaluation is selected. The interrupt
function is enabled via object 6423
h
.
Positive and negative changes of the voltage are evaluated.
The value Analog_Input_IRQ_Delta_x is always the absolute value of the difference between the
current AD-value minus the previous AD-value.
The difference of the AD-values is always entered in object 6426
h
as positive absolute value.
If the objects 6421
h
and 6423
h
are configured correspondingly, the interrupt is triggered as soon as
the difference of the AD-values exceeds or equals the value Analog_Input_Interrupt_IRQ_Delta_x.
Per default the value is set to '0'. Thus the interrupt will always be triggered, because the absolute
difference is always
×
0.
Value range:
Value of the variable
Analog_Input_IRQ_Delta_x
Change of voltage
Meaning
0001 0000
h
312,5
Ø
V
minimum value
:
:
-
FFFF FFFF
h
+20,48 V
maximum value
0066 0000
h
31,875 mV
example
3400 0000
h
4,16 V
example
