Functions / Operation By Hart; Operating Data - Siemens SITRANS TW 7NG3242 Betriebsanleitung

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Functions / Operation by HART

For operation via HART it is necessary to use a HART Communicator (see the
appendix for menu structure) or a PC software such as SIMATIC PDM. Please con-
sult the appropriate operating instructions or online help to find out how to operate
this tool.
4.1

Operating data

The following operating data can be transmitted to the transmitter and requested
from the transmitter.
• Identification
− Specifications on operating reliability: Day, description, message, assembly
number
− Device data (these data are read only)
→
→
→
→
• Specifications on the measuring method:
− Sensor class and sensor type (e.g. resistance thermometer Pt100 or thermo-
couple type B)
− Scaling factor of the sensor
− Sensor characteristic (e.g. temperature linear or voltage linear)
− Measuring range and unit
− Mains frequency filter / measuring frequency
• Data of measuring connection
− Connection type (standard, difference or average value circuit)
− Connection type / sensor connection (two, three or four-wire circuit)
− Resistors for line compensation
− Offset in measuring signal
− Additional data for the reference point in thermocouples (internal, external,
fixed or none)
− Enable / disable wire break and short-circuit test
• Data for output signal
− Current or voltage output (0 ... 20mA, 4 ... 20mA, 0 ... 10V or 2 ... 10V) in
connection with hardware modification according to chapter 3.5.3, page 92
− Filter time constant for dampening for interference suppression
− Behavior in event of line break, sensor short-circuit and hardware and
firmware errors (e.g. output signal opening, closing or hold last value).
− Output limit values (alarm and saturation limits)
SITRANS TW
A5E00054075-05
Manufacturer and product name
Order number, device serialnumber
Data of power supply and hardware writeprotection
Revision number (universal, field device, software and hardware revision)
Functions / Operation by HART
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