Siemens P technical specifications Hart communication, Internal preprocessing Device profile

© Siemens AG 2008

SITRANS P measuring instruments for pressure

Transmitters for gage, absolute and differential pressure, flow and level

DS III series for gage pressure

HART communication
HART communication	230 ... 1100 Ω
Protocol	HART Version 5.x
Software for computer	SIMATIC PDM
PROFIBUS PA communication
Simultaneous communication with	4
master class 2 (max.)
The address can be set using	Configuration tool or local opera-
	tion (standard setting address
	126)
Cyclic data usage

Communication FOUNDATION Fieldbus
Function blocks	3 function blocks analog input,
	1 function block PID
• Analog input
- Adaptation to customer-specif-	Yes, linearly rising or falling char-	2
ic process variables	acteristic

-Electrical damping T63 , adjust- 0 ... 100 s able

- 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)

• 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

- Limit monitoring	Yes, one upper and lower warning
	limit and one alarm limit respec-
	tively
- Square-rooted characteristic	Yes
for flow measurement
• PID	Standard FF function block
• Physical block	1 Resource block

Function blocks	2
• Analog input
- Adaptation to customer-specif-	Yes, linearly rising or falling char-
ic process variables	acteristic

-Electrical damping T63 , adjust- 0 ... 100 s able

- 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

Transducer blocks	1 transducer block Pressure with
	calibration, 1 transducer block
	LCD
• Pressure transducer block
- Can be calibrated by applying	Yes
two pressures
- Monitoring of sensor limits	Yes
- Simulation function: Measured	Constant value or over parameter-
pressure value, sensor temper-	izable ramp function
ature and electronics tempera-
ture

• 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	Yes
two pressures
- Monitoring of sensor limits	Yes
- Specification of a container	Max. 30 nodes
characteristic with
- Square-rooted characteristic	Yes
for flow measurement
- Gradual volume suppression	Parameterizable
and implementation point of
square-root extraction

- Simulation function for mea- sured pressure value and sen- sor temperature

Constant value or over parameter- izable ramp function

Siemens FI 01 · 2009

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