Parameterising analog modules
Input data / output data
13
Parameter setting via PROFIBUS−DP
13.1
13.1.2
L
13.1−6
EDSPM−TXXX−9.0−11/2009
13.1.2 Input data / output data
Two bytes (LOW byte, HIGH byte) are available for input and output data.
Byte17 S7 format S5 format
LOW byte
Bits 0 ... 7 Binary signal value
Bit 0
Overflow bit
0 Value within signal range
1 Signal range exceeded
Bit 1
Error bit
0 No error
1 Internal fault
Bit 2 Activity bit (always 0)
Bits 3 ... 7 Binary signal value
HIGH byte
Bits 0 ... 6 Binary signal value Bits 0 ... 6 Binary signal value
Bit 7
Polarity bit
Bit 7
Polarity bit
0 Positive polarity 0 Positive polarity
1 Negative polarity 1 Negative polarity
13.1.3 Converting measured values for voltage and current
Signal
range
Signal
[U] / [I]
S7 format S5 format
Decimal value
[dec]
Hexadecimal value
[h]
Formulae for calculation Decimal value
[dec]
Hexadecimal value
[h]
Formulae for calculation
±10 V
−10 V −27648 9400
dec + 27648 @
U
10
U +dec@
10
27648
−16384 C000
dec + 16348 @
U
10
U +dec@
10
16348
−5 V −13824 CA00 −8192 E000
0 V 0 0000 0 0000
+5 V +13824 3600 +8192 2000
+10 V +27648 6C00 +16384 4000
0 ... 10 V
0 V 0 0000
dec + 16384 @
U
10
U +dec@
10
16384
0 0000
dec + 16384 @
U
10
U +dec@
10
16384
+5 V +8192 2000 +8192 2000
+10 V +16384 4000 +16384 4000
1 ... 5 V
+1 V
0 0000
dec + 27648 @
U * 1
4
U +dec@
4
16384
)1
+3 V +8192 2000
+5 V +16384 4000
±4 V
−4 V −27648 9400
dec + 27648 @
U
4
U +dec@
4
27648
0 V 0 0000
+4 V +27648 6C00
±400 mV
−400 mV −27648 9400
dec + 27648 @
U
400
U +dec@
400
27648
0 V 0 0000
+400 mV +27648 6C00
4 ... 20 mA
+4 mA 0 0000
dec + 27648 @
I * 4
16
U +dec@
16
27648
)1
0 0000
dec + 16384 @
I * 4
16
U +dec@
16
16384
)1
+12 mA +13824 3600 +8192 2000
+20 mA +27648 6C00 +16384 4000
±20 mA
−20 mA −27648 9400
dec + 27648 @
I
20
U +dec@
20
27648
−16384 C000
dec + 16384 @
I
20
U +dec@
20
16384
−10 mA −13824 CA00 −8192 E000
0 mA 0 0000 0 0000
+10 mA +13824 3600 +8192 2000
+20 mA +27648 6C00 +16384 4000
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