VIPA 238-2BC00 - Page 89

Manual VIPA System 200V Chapter 3 Analog output modules
HB97E - SM-AIO - Rev. 12/32 3-5
Within the Siemens S7 format a value may be converted between decimal
and output value by means of the following formulas.
+/- 10V
Voltage Decimal Hex
-10V -27648 9400
-5V -13824 CA00
0V 0 0
5V 13824 3600
10V 27648 6C00
0...10V
Formulas for the calculation:
10
27648
U
Value ⋅=
,
27648
10
⋅= ValueU
U: voltage, Value: decimal value
Voltage Decimal Hex
0V 0 0000
5V 13824 3600
10V 27648 6C00
1...5V
Formulas for the calculation:
10
27648
U
Value ⋅=
,
27648
10
⋅= ValueU
U: voltage, Value: decimal value
Voltage Decimal Hex
1V 0 0
3V 13824 3600
5V 27648 6C00
4....20mA
Formulas for the calculation:
4
1
27648
−
⋅=
U
Value
,
1
27648
4
+⋅= ValueU
U: voltage, Value: decimal value
Current Decimal Hex
4mA 0 0
12mA 13824 3600
20mA 27648 6C00
+/- 20mA
Formulas for the calculation:
16
4
27648
−
⋅=
I
Value
,
4
27648
16
+⋅= ValueI
I: current, Value: decimal value
Current Decimal Hex
-20mA -27648 9400
-10mA -13824 CA00
0mA 0 0
10mA 13824 3600
20mA 27648 6C00
0...20mA
Formulas for the calculation:
20
27648
I
Value ⋅=
,
27648
20
⋅= ValueI
I: current, Value: decimal value
Current Decimal Hex
0mA 0 0
10mA 13824 3600
20mA 27648 6C00
Formulas for the calculation:
20
27648
I
Value ⋅=
,
27648
20
⋅= ValueI
I: current, Value: decimal value
Conversion within
the Siemens S7-
format