Siemens SIMATIC Distributed I/O ET 200eco PN Operating Instructions Manual page 173

I/O device analog input/analog output
10.1 I/O device analog input
Observe the rules outlined below to handle a wire break in the 1 V to 5 V and 4 mA to 20 mA
measuring ranges:
Parameters
Enable wire break
Wire break disabled
Underflow enabled
Wire break disabled
Underflow disabled
1
Measuring range limits for wire break detection and measuring range undershoot detection:
• 1 V to 5 V: At 0.296 V
• 4 mA to 20 mA: At 1.185 mA
Diagnostics at 8AI RTD/TC
Take the following diagnostics into account:
Diagnostics,
wire break
Activated
Deactivated
Deactivated
Deactivated
Deactivated
Diagnostics: Underflow
If the measured value reaches the underflow range and you enable this parameter, the
Underflow diagnostics event is generated.
Diagnostics: Overflow
If the measured value reaches the overflow range and you enable this parameter, the
Overflow diagnostics event is generated.
174
Event
1 Wire break
1
Wire break
1
Wire break
Diagnostics, Diagnostics,
overflow underflow
Deactivated Deactivated
Deactivated Activated
Activated Deactivated
Activated Activated
Deactivated Deactivated
Measured Explanation
value
7FFF Diagnostics, wire break
H
8000 Measured value after leaving the under­
H
shoot range
Diagnostic message Lower limit value
undershot
8000 Measured value after leaving the under­
H
shoot range
Event Process data
Wire break 0x7FFF
Wire break 0x8000
Wire break 0x7FFF
Wire break 0x8000
Wire break 0x7FFF
Operating Instructions, 06/2022, A5E01250250-AN
Diagnostic
message per
channel:
Wire break
Low limit viol­
ated
High limit viol­
ated
Low limit viol­
ated
ET 200eco PN