Pyromation Series 642 - Manual (Page 17)

Series 642 Operation
Pyromation, Inc. 17
5.3.2 TransComm Light
This is a universally applicable service and configuration software. Connection is made using a
HART
® modem. The operating software offers the user the following possibilities:
• Set-up device functions
• Measured value visualisation
• Device parameter data storage
• Measuring point documentation
NOTICE
Analog output
► The analog output is undefined when downloading the device function parameters from the PC
configuration software to the device.
Further in-depth information to operation via TransComm Light can be found in the online
documentation of the software. TransComm Light can be downloaded free of charge from the
following address:
www.pyromation.com
5.3.3 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 programmes 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 functionalities:
– Recognising HART
® device
– Read out 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 ® standardised.
Such commands access, amongst other things, individual field device information.
Chapter 6.4.2 contains a list of all HART ® commands supported.
• With the HART ® handheld module, all parameters can be read and programming is
disabled. However, you can enable the HART ® function matrix by entering 24
6 in the
SECURITY LOCKING function. The enable status is retained even after a power failure.
Delete the release code 24
6 to lock the HART ® function matrix again.
• Detailed information can be found in the HART ® instruction manual that can be found
in the handheld module transport pouch.