70
Process Image
WAGO-I/O-SYSTEM 750
753-668/000-004 4FAI 0/4-20 mA Diff PROFIsafe
Manual
Version 1.0.0, valid from HW/SW Version 01/01
5.9
Analog Value Data Format of Input Process Values
5.9.1
Format Siemens S7 with Fixed Substitute Values
5.9.1.1
Measurement Range 0
… 20 mA
Table 39: Siemens S7 with Fixed Substitute Values, 0
… 20 mA
Measurement
Range
Unit
Channel
Status
Range
Decimal
Hexadecimal
> 25 mA
Parameterizable substitute
value
2
0
Overload
25
…
> 23.518 mA
32767
0x7FFF
2
0
Overflow
23.518
…
20.0007 mA
32511
…
27649
0x7EFF
…
0x6C01
1
Overrange
20
…
> 0.4442 mA
27648
…
614
0x6C00
…
0x266
1
Nominal range
< 0.4442
…
0 mA
32767
0x7FFF
1,2
0
Wire break
1
Module reports wire break, 0x7FFF.
2
In “S7 F/FH Systems” an extra substitute value is output for this value in case of overload,
overflow or wire break in the safety program.
In “S7 Distributed Safety”, the substitute value 0 is provided in the process image for the safety
program instead of 0x7FFF (for overflow, wire break) or parameterized substitute value (overload).