Siemens SITRANS P - Manual (Page 38)

SITRANS P measuring instruments for pressure
Transmitters for food, pharmaceuticals and biotechnology
SITRANS P300 for gage and absolute pressure
2/38 Siemens FI 01 · 2009
2
HART communication
HART communication 230 ... 1100 Ω
Protocol HART Version 5.x
Software for computer SIMATIC PDM
PROFIBUS PA communication
Simultaneous communication with
master class 2 (max.) 4
The address can be set using Configuration tool or local opera-
tion (standard setting address
126)
Cyclic data usage
• Output byte 5 (one measuring value) or
10 (two measuring values)
• Input byte 0, 1, or 2 (register operating mode
and reset function for metering)
Internal preprocessing
Device profile PROFIBUS PA Profile for Process
Control Devices Version 3.0,
Class B
Function blocks 2
• Analog input
- Adaptation to customer-specif-
ic process variables
Yes, linearly rising or falling char-
acteristic
- Electrical damping T
63
, adjust-
able
0 ... 100 s
- Simulation function Input /Output
- Failure mode Can be parameterized (last good
value, substitute value, incorrect
value)
- Limit monitoring Yes, one upper and lower warning
limit and one alarm limit respec-
tively
• Register (totalizer) Can be reset, preset, optional
direction of counting, simulation
function of register output
- Failure mode Can be parameterized (summation
with last good value, continuous
summation, summation with incor-
rect value)
- Limit monitoring One upper and lower warning limit
and one alarm limit respectively
• Physical block 1
Transducer blocks 2
• Pressure transducer block
- Can be calibrated by applying
two pressures
Yes
- Monitoring of sensor limits Yes
- Specification of a container
characteristic with
Max. 30 nodes
- Square-rooted characteristic
for flow measurement
Yes
- Gradual volume suppression
and implementation point of
square-root extraction
Parameterizable
- Simulation function for mea-
sured pressure value and sen-
sor temperature
Constant value or over parameter-
izable ramp function
Communication FOUNDATION Fieldbus
Function blocks 3 function blocks analog input,
1 function block PID
• Analog input
- Adaptation to customer-specif-
ic process variables
Yes, linearly rising or falling char-
acteristic
- Electrical damping T
63
, adjust-
able
0 ... 100 s
- Simulation function Output/input (can be locked within
the device with a bridge)
- Failure mode Can be parameterized (last good
value, substitute value, incorrect
value)
- Limit monitoring Yes, one upper and lower warning
limit and one alarm limit respec-
tively
- Square-rooted characteristic
for flow measurement
Yes
• PID Standard FF function block
• Physical block 1 Resource block
Transducer blocks 1 transducer block Pressure with
calibration, 1 transducer block
LCD
• Pressure transducer block
- Can be calibrated by applying
two pressures
Yes
- Monitoring of sensor limits Yes
- Simulation function: Measured
pressure value, sensor temper-
ature and electronics tempera-
ture
Constant value or over parameter-
izable ramp function
© Siemens AG 2008