
Device Profile Area
CAN-CBX_Pt100
Manual • Doc.-No.: C.3032.21 / Rev. 1.1
Page 91 of 120
8.10.9 AI Status (6150
h
)
Index
Sub-
index
Description
Value range
Default
Data type
Access
mode
6150
h
0
Number_of_entries
4
4
unsigned 8
ro
1
AI_status_1
0...5
-
unsigned 8
ro
2
AI_status_2
0...5
-
unsigned 8
ro
3
AI_status_3
0...5
-
unsigned 8
ro
4
AI_status_4
0...5
-
unsigned 8
ro
Description of the variable AI_status_x (x = 1...4):
These variables return the state of the corresponding analog input channel.
Bit:
7
6
5
4
3
2
1
0
Meaning:
reserved
*
4)
not supported *
4)
reserved
*
4)
Negative
Overload
Positive
Overload
Not Valid
*
4)
These bits are always returned as ‘0’.
Value range:
Description
Negative overload limit
Positive overload limit
PT-sensors
-200.715
D
C
853.498
D
C
Ni-sensors
-200.000
D
C
399.138
D
C
electric resistance measurement
at default setting
-
-
A bit is active (set to ‘1’), if the lower or the upper limit is exceeded. The bits 1 and 2 cannot be set
at the same time.
If no sensor is connected, only bit “Not Valid” is set.
If the temperature exceeds the range, bits “Not Valid” AND the corresponding “Overload”-bit are
set.
Valid return messages are e.g.:
AI_Status_1 = 00
h
: no error
AI_Status_1 = 03
h
: positive overload and sensor value not valid (e.g. no sensor identified)