Siemens 2AI 2/4WIRE HF Manuel - Sayfa 19
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Current measuring range: ± 20 mA
Table 4-4
SIMATIC S7 format: Measuring range ± 20 mA
Measuring range ± 20 mA
> 23,5150
23,5150
:
20,0007
20,0000
14,9980
:
-14,9980
-20,0000
-20,0007
:
-23,5160
< -23,5160
Measured values in the event of a wire break in relation to enabled diagnostics
The following additional information applies to the current measuring range 4 to 20 mA:
Table 4-5
Measured values in the event of a wire break in relation to enabled diagnostics
Format
Parameter assignment
"Wire break" diagnostics enabled
S7
•
"Wire break" diagnostics disabled
•
"Overflow/underflow" diagnostics
•
enabled
"Wire break" diagnostics disabled
•
"Overflow/underflow" diagnostics
•
disabled
Measuring range limits for wire break and underflow detection: At 1.185 mA
1
2 AI I 2/4WIRE HF analog electronic module (6ES7134-4MB02-0AB0)
Manual, 04/2007, A5E01076111-01
Units
Decimal
32767
32511
:
27649
27648
20736
:
-20736
-27648
-27649
:
-32512
-32768
Measured values
1
Decimal
32767
-32767
-32767
Hexadecimal
7FFF
H
7EFF
H
:
6C01
H
6C00
H
5100
H
:
AF00
H
9400
H
93FF
H
:
8100
H
8000
H
Hexadecimal
"Open circuit" diagnostic message
7FFF
•
H
Measured value after leaving the
8000
•
H
underrange
"Lower limit value undershot"
•
diagnostic message
Measured value after leaving the
8000
•
H
underrange
Analog value representation
4.3 Measuring ranges
Range
Overflow
Overshoot range
Nominal range
Underrange
Underflow
Description
19