Analog value representation
4.3 Measuring ranges
2AI U ST analog electronic module (6ES7134-4FB01-0AB0)
Manual, 04/2007, A5E01076000-01
17
Voltage measuring ranges: 1 to 5 V
Table 4-4
SIMATIC S7 format: Measuring range 1 to 5 V
Units
Measuring range
1 to 5 V
Decimal
Hexadecimal
Range
> 5,704
32767
7FFF
H
Overflow
5,704
:
5,000145
32511
:
27649
7EFF
H
:
6C01
H
Overshoot range
5,000
4,000
:
1,000
27648
20736
:
0
6C00
H
5100
H
:
0
H
Nominal range
0,999855
:
0,296
-1
:
-4864
FFFF
H
:
ED00
H
Underrange
< 0,296
-32768
8000
H
Underflow
Measured values in the event of a wire break in relation to enabled diagnostics
The following additional information applies to the voltage measuring range 1 to 5 V:
Table 4-5
Measured values in the event of a wire break in relation to enabled diagnostics
Measured values
Format
Parameter assignment
1
Decimal
Hexadecimal
Description
•
"Wire break" diagnostics enabled
32767
7FFF
H
•
"Open circuit" diagnostic message
•
"Wire break" diagnostics disabled
•
"Overflow/underflow" diagnostics
enabled
-32767
8000
H
•
Measured value after leaving the
underrange
•
"Lower limit value undershot"
diagnostic message
S7
•
"Wire break" diagnostics disabled
•
"Overflow/underflow" diagnostics
disabled
-32767
8000
H
•
Measured value after leaving the
underrange
1
Measuring range limits for wire break and underflow detection: At 0.296 V
