Vega VEGABAR 51 Operating Instructions Manual page 65

Free Place
l
Byte-No.
1 2
Format
IEEE-754-
Flieskommazahl
Value
PA-OUT
(FB1)
Fig. 29: Telegram configuration example 2
Example 3 with pressure value and additional cyclical value without temperature value:
AI (PA-OUT)
l
Free Place
l
Additional Cyclic Value
l
Byte-No.
1 2
IEEE-754-
Format
Floating point value
PA-OUT
Value
(FB1)
Fig. 30: Telegram configuration example 3
Data format of the output signal
Byte2 Byte1 Byte0
Byte4 Byte3
Status Value (IEEE-754)
Fig. 31: Data format of the output signal
The status byte corresponds to profile 3.0 "Profibus PA Profile for Process Control Devices" coded.
The status "Measured value OK" is coded as 80 (hex) (Bit7 = 1, Bit6 ... 0 = 0).
VEGABAR 51 • Profibus PA
3 4 5 6
Status
Status
(FB1)
3 4 5 6
Status
Floating point value
Status Additional Cyclic
(FB1)
7 8 9
IEEE-754- Status
Flieskommazahl
Temperature Status
(FB2) (FB2)
7 8 9 10
IEEE-754- Status
Status
Value
10 Supplement
10
65