Wire Break Detection Disabled; Rioforpa Representation; Table 44: Siemens S7 With Parameterizable Substitute Values - WAGO 753-668/000-004 Manual

WAGO-I/O-SYSTEM 750
753-668/000-004 4FAI 0/4-20 mA Diff PROFIsafe
Measurement Range 4 ... 20 mA with Wire Break Detection Disabled
5.9.2.3
Table 44: Siemens S7 with Parameterizable Substitute Values, 4 ... 20 mA, Wire Break Detection
Disabled
Measurement
Range
> 25 mA
25 ...
> 22.814 mA
22.814 ...
20.0006 mA
20 ...
4.0005787 mA
4.00 mA
3.9995 ...
0.4444 mA
< 0.4444 ...
0 mA
1
In "S7 F/FH Systems" an extra substitute value is output for this value in case of overload,
overflow or underflow in the safety program.
In "S7 Distributed Safety", the substitute value 0 is provided for the safety program instead of the
parameterizable substitute value.
5.9.3

RIOforPA Representation

Additional measures required for "RIOforPA" in measurement range
0 ... 20 mA.
In measurement range 0 ... 20 mA, the F I/O module does not monitor the
underflow of defined input currents in the analog value representation
"RIOforPA". As a result, a wire break cannot be detected by the F I/O module.
Plan appropriate measures to detect errors.
Unit
Decimal Hexadecimal
Parameterizable substitute
1
value
Parameterizable substitute
1
value
32511
0x7EFF...
...
0x6C01
27649
27648
0x6C00 ... 0x1
... 1
0 0x0
−1 ... 0xFFFF ...
−6144
0xE800
Parameterizable substitute
1
value
Version 1.0.0, valid from HW/SW Version 01/01
Process Image
Channel
Range
Status
0 Overload
0 Overflow
1 Overrange
1 Nominal range
1 Underrange
0 Underflow
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