X20 system modules • Temperature modules • X20ATA492
X20 system User's Manual 3.10
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4.31.6.9.7 Error handling
4.31.6.9.7.1 "StatusInput0x" registers
The module's temperature inputs are monitored. A change in the monitoring status generates an error message.
Some error information is only enabled after a configurable delay [ms] (as with the composite error) or after a
configurable delay as a multiple of the conversion cycle when underflow, overflow or open lines occurs.
Data type USINT
Bit
Name
Information
0
No error
0
Underflow monitoring for channel 0x
1
Underflow
0
No error
1
Overflow monitoring for channel 0x
1
Overrun
0
No error
2
Open line monitoring for channel 0x
1
Open line
0
No error
3
Composite message: Terminal temperature measure-
ment error for channel 0x
1
Error during terminal temperature measurement
0
No error
4
Conversion monitoring for channel 0x
1
Conversion error
0
No error
5
Composite error monitoring for channel 0x
1
Composite error
0
No error
6
Parameter monitoring for channel 0x
1
Parameter error
0
No error
7
I/O supply monitoring for channel 0x
1
I/O supply error
Table 866: "StatusInput01" and "StatusInput02" registers
In addition to the status info, the error type also sets the analog value to the following values:
Error type
Digital value for error
Open circuit
32767 (0x7FFF)
Upper limit value exceeded
32767 (0x7FFF)
Lower limit value exceeded
-32767 (0x8001)
Invalid value or I/O supply error
-32768 (0x8000)
Table 867: Display values in error state
4.31.6.9.7.2 "Underflow0x" data points
These data points generate the error status when the signal falls below the minimum value on the respective tem-
perature channel. This error information is enabled as a multiple of the converter cycle only after the configurable
delay time.
BOOL
Name
Information
0
No error
x
Underflow monitoring for channel 0x
1
Underflow
Table 868: "Underflow01" and "Underflow02" data points
4.31.6.9.7.3 "Overflow0x" data points
These data points generate the error status when the signal exceeds the maximum value on the respective tem-
perature channel. This error information is enabled as a multiple of the converter cycle only after the configurable
delay time.
BOOL
Name
Information
0
No error
x
Overflow monitoring for channel 0x
1
Overrun
Table 869: "Overflow01" and "Overflow02" data points
4.31.6.9.7.4 "OpenLine0x" data points
These data points generate the error status when an open line is detected on the respective temperature channel.
This error information is enabled as a multiple of the converter cycle only after the configurable delay time.
BOOL
Name
Information
0
No error
x
Open line monitoring for channel 0x
1
Open line
Table 870: "OpenLine01" and "OpenLine02" data points
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