74
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
5.9.3.1
Measurement Range 0
… 20 mA
Table 45: RIOforPA, 0
… 20 mA
Measurement
Range
Unit
Channel
Status
Range
Decimal
Hexadecimal
> 25 mA
Parameterizable substitute
value
1
0
Overload
25
… > 21 mA
65535
…
55051
0xFFFF
…
0xD70B
1
0
Overflow
21
…
> 20.5 mA
55050
…
53740
0xD70A
…
0xD1EC
1
Overrange II
20.5
…
> 20 mA
53739
…
52429
0xD1EB
…
0xCCCD
1
Overrange I
20
…
0.00038147 mA
52428
… 1
0xCCCC
…
0x1
1
Nominal range
0 mA
0
0x0
1
In “S7 F/FH Systems” an extra substitute value is output for this value in case of overload 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 (overload).
5.9.3.2
Measurement Range 4
… 20 mA
Table 46: RIOforPA, 4
… 20 mA
Measurement
Range
Unit
Channel
Status
Range
Decimal
Hexadecimal
> 25 mA
Parameterizable substitute
value
1
0
Overload
25
… > 21 mA
65535
…
55051
0xFFFF
…
0xD70B
1
0
Overflow
21
…
> 20.5 mA
55050
…
53740
0xD70A
…
0xD1EC
1
Overrange II
20.5
…
> 20 mA
53739
…
52429
0xD1EB
…
0xCCCD
1
Overrange I
20
… 4 mA
52428
…
10486
0xCCCC
…
0x28F6
1
Nominal range
< 4.00
…
3.8 mA
10485
…
9962
0x28F5
…
0x26EA
1
Underrange I
< 3.8
… 3.6 mA
9961
…
9438
0x26E9
…
0x24DE
1
Underrange II
< 3.6
…
0.00038147 mA
9437
…1
0x24DD
…
0x1
1
0
Underflow
0 mA
0
0x0
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 (overload).