Interrupts - Siemens SIMATIC ET 200AL Manual

Interrupts/diagnostics alarms

5.2 Interrupts

5.2 Interrupts
Analog input module AI 4xU/I/RTD 4xM12 supports the following diagnostic and hardware
interrupts.
Diagnostic interrupt
The table below shows the events for which the analog input module returns a diagnostic
interrupt, depending on the parameter assignment.
Table 5- 3
Measurement
type
Voltage
Current
Resistance
Resistance
thermometer
Column valid for configuration with PROFINET GSD file
1
Column valid for configuration with PROFIBUS GSD file
2
Hardware interrupt
The analog input module generates a hardware interrupt with the following events:
● Low limit 1 violated
● High limit 1 violated
● Low limit 2 violated
● High limit 2 violated
Detailed information on the event is available in the hardware interrupt organization block
with the instruction "RALRM" (Read additional interrupt information) and in the STEP 7
online help.
32
Diagnostic interrupts
Measuring
range
Short-circuit
to ground
1 V to 5 V x
0 V to 10 V x
2-DMU x
4 mA to
20 mA
4-DMU x
0 mA to
20 mA
4-DMU x
4 mA to
20 mA
150 Ω -
300 Ω -
PT100 -
Ni100 -
Diagnostics
Wire break Underflow
x x
- x
x x
- x
x x
x -
x -
x x
x x
Analog input module AI 4xU/I/RTD 4xM12 (6ES7144-5KD00-0BA0)
Overflow Underflow/
1 1
Overflow
x x
x x
x x
x x
x x
x x
x x
x x
x x
Manual, 08/2018, A5E32350124-AD
2