Declaration Of Parameters - Siemens SIMATIC S7-1500 Manual
Analog input module ai 8xu/i hs
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- System manual (523 pages) ,
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Parameters/address space
4.3 Declaration of parameters
Parameters
Hardware interrupt
•
low limit 1
Hardware interrupt
•
high limit 2
Hardware interrupt
•
low limit 2
If you enable diagnostics for multiple channels, you will receive an alarm surge on failure of the supply voltage because
1)
each enabled channel will detect this fault.
You can prevent this message burst by assigning the diagnostics function to one channel only.
When "Wire break" diagnostics is disabled, the current limit of 1.185 mA is applied to the value status. For measured
2)
values below 1.185 mA, the value status is always: 0 = fault.
You can set the effective range of the diagnostics for each channel in the user program with data records 0 to 7.
3)
You can set the current limit for wire break diagnostics, the "Hardware interrupt" parameter and the hardware interrupt
4)
limits in the user program with data records 0 to 7.
4.3
Declaration of parameters
Missing supply voltage L+
Enabling of the diagnostics, with missing or too little supply voltage L+.
Overflow
Enabling of the diagnostics if the measured value violates the high limit.
Underflow
Enabling of the diagnostics if the measured value violates the low limit.
Wire break
Enabling of the diagnostics if the module has no current flow or the current is too weak for
the measurement at the corresponding configured input or the applied voltage is too low.
Current limit for wire break diagnostics
Threshold for reporting wire breaks. The value can be set to 1.185 mA or 3.6 mA, depending
on the sensor used.
18
Range of values
Default
setting
Yes/No
No
Yes/No
No
Yes/No
No
Parameter as-
Scope with configuration software, e.g.,
signment in RUN
PROFINET IO
Yes
Channel
Yes
Channel
Yes
Channel
Analog Input Module AI 8xU/I HS (6ES7531-7NF10-0AB0)
STEP 7 (TIA Portal)
GSD file
GSD file
PROFIBUS DP
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4)
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Manual, 07/2014, A5E03484886-AC
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