Siemens SIMATIC ET 200AL, System Manual

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What you should know about analog technology
2.14 Diagnostics
Analog value processing
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Function Manual, 06/2014, A5E03461439-AC
Table 2- 12 Diagnostics types of an analog input module to be configured depending on the measurement type
"Thermocouple"
No supply
voltage L+
Wire break Overflow Underflow Common
mode error
Reference
junction
Short-circuit
S7-1500 ✓ ✓ ✓ ✓ ✓ ✓ -
ET 200MP ✓ ✓ ✓ ✓ ✓ ✓ -
ET 200SP ✓ ✓ ✓ ✓ - ✓ -
ET 200eco PN ✓ - ✓ ✓ - ✓ -
ET 200pro - - ✓* ✓* - ✓ -
* For ET 200pro, the parameters "Overflow" and "Underflow" are combined to the parameter "Overflow/Underflow"
Diagnostics for analog output modules
Table 2- 13 Diagnostics types of an analog output module to be configured depending on the measurement type "Voltage"
No supply
voltage L+
Wire break Overflow Underflow Short-circuit Overload
S7-1500 ✓ - ✓ ✓ ✓ -
ET 200MP ✓ - ✓ ✓ ✓ -
ET 200SP ✓ - ✓ ✓ ✓ -
ET 200eco PN ✓ - - - ✓ ✓
ET 200pro - - - - ✓ -
Table 2- 14 Diagnostics types of an analog output module to be configured depending on the measurement type "Current"
No supply
voltage L+
Wire break Overflow Underflow Short-circuit Overload
S7-1500 ✓ ✓ ✓ ✓ - -
ET 200MP ✓ ✓ ✓ ✓ - -
ET 200SP ✓ ✓ ✓ ✓ - -
ET 200eco PN ✓ ✓ - - - ✓
ET 200pro - ✓ - - - -
Note
Measuring ranges
Note that the diagnostics types that can be parameterized depend on the selected
measurement/output type as well as on the respective measuring range.
Note
Minimum output values
Certain errors such as wire break and short circuit cannot be diagnosed below a given
current or voltage value. Diagnostics are only possible again once the output returns to
above this minimum value.