VEGA VEGAPULS 68 (≥ 2.0.0 - ≥ 4.0.0) Foundation Fieldbus - Manual (Page 70)

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11 Supplement
VEGAPULS 68 • Foundation Fieldbus
36538-EN-121011
Electricial Characteristics Physicial Layer Type Low-power signaling, bus-pow-
ered, FISCO I.S.
Input Impedance > 3000 Ohms between
7.8 KHz - 39 KHz
Unbalanced Capacitance < 250 pF to ground from either
input terminal
Output Amplitude 0.8 V P-P
Electrical Connection 2 Wire
Polarity Insensitive Yes
Max. Current Load 10 mA
Device minimum operating voltage 9 V
Transmitter Function Blocks Resource Block (RB) 1
Transducer Block (TB) 1
Standard Block (AI) 3
Execution Time 30 mS
Advanced Function Blocks Discret Input (DI) Yes
PID Control Yes
Output Splitter (OS) Yes
Signal Characterizer (SC) Yes
Integrator Yes
Input Selector (IS) Yes
Arithmetic (AR) Yes
Diagnostics Standard Yes
Advanced Yes
Performance No
Function Blocks Instantiable No
General Information LAS (Link Active Scheduler) Yes
Master Capable Yes
Number of VCRs (Virtual Communication Re-
lationships)
24
11.2 Function blocks
Transducer Block (TB)
The Transducer Block "Analog Input (AI)" takes the original measured value (Secondary Value 2),
carries out the min./max. adjustment (Secondary Value 1), carries out a linearization (Primary Value)
and makes the values on its output available for further function blocks.