Siemens SIMATIC ET 200eco PN - Page 179

I/O device analog input/analog output
10.1 I/O device analog input
ET 200eco PN
Operating Instructions, 08/2016, A5E01250250-AJ
179
Diagnostics: Wire break
When this parameter is enabled, the
Wire break
diagnostics event is generated when a wire
break is detected.
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
Event
Measured
value
Explanation
Enable wire break
1
Wire break
7FFF
H
Diagnostics, wire break
Wire break disabled
1
Underflow enabled
Wire break 8000
H
Measured value after leaving the under-
shoot range
Diagnostic message
Lower limit value
undershot
Wire break disabled
1
Underflow disabled
Wire break 8000
H
Measured value after leaving the under-
shoot range
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
Diagnostics,
overflow
Diagnostics,
underflow
Event
Process data
Diagnostic
message per
channel
Activated
Deactivated
Deactivated
Wire break
0x7FFF
Wire break
Deactivated Deactivated Activated Wire break 0x8000 Low limit vio-
lated
Deactivated Activated Deactivated Wire break 0x7FFF High limit vio-
lated
Deactivated Activated Activated Wire break 0x8000 Low limit vio-
lated
Deactivated
Deactivated
Deactivated
Wire break
0x7FFF
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.