TMT162 Operation
Endress+Hauser 19
5.3.3 ReadWin
®
2000
ReadWin
®
2000 is a universally applicable service and configuration software. Connection is made
using a HART
®
modem, e.g. Commubox FXA191. The operating software offers the user the
following possibilities:
• Setup device functions
• Measured value visualization
• Device parameter data storage
• Measuring point documentation
"
Caution!
The analog output is undefined when downloading the device function parameters from ReadWin
®
2000 to the device.
Further in-depth information on operation via ReadWin
®
2000 can be found in the online
documentation of the software. ReadWin
®
2000 can be downloaded free of charge from the
following address:
• www.endress.com/Readwin
5.3.4 Command classification in the HART
®
protocol
The HART
®
protocol makes it possible for configuration and diagnostic purposes to transmit
measured and device data between the HART
®
master and the respective field device.
HART
®
masters such as the handheld module or PC-based operating programs (e.g. FieldCare)
require so-called device description files (DD = device descriptions, DTM), these make it possible
to access all information in a HART
®
device. Transmission of such information is done exclusively
using "commands".
There are three command classifications:
• Universal commands
Universal commands are supported and used by all HART
®
devices. Combined are for example
the following functionality:
– Recognizing HART
®
devices
– Readout of digital measured values
• Common practice commands:
These general commands offer functions that are supported or used by some but not all field
devices.
• Device specific commands
These commands enable access to device specific functions that are not HART
®
standardized.
Such commands access, among other things, individual field device information.
!
Note!
Chapter 6.4.2 contains a list of all HART
®
commands supported.
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