KROHNE OPTIWAVE 7300 C Handbook page 30

Handbook OPTIWAVE 7300 C
HART® communication protocol
In accordance with the Rosemount Standard, HART® communication can be used with this level gauge. It
is used as a point-to-point connection between the slave (this level gauge) and the HART® master or for
multidrop networks (up to 15 devices).
Additional information
The following can be called up via the following interfaces:
• Current output: 3.6 or 22 mA for error signal (according to NAMUR NE43 standard)
• Digital HART® interfaces: scanning for error flags and messages.
Changing from point-to-point to multi-drop network mode
The device's output 1 communicates by default in point-to-point mode (HART address 0). If you wish for the
device to communicate in multi-drop mode then you have to modify the output's HART address.
Use the following procedure:
Procedure (using the display screen configuration wizard)
1. Enter Program Mode (Press right key for three seconds)
2A. Either go to Quick Setup > Setup mode > Outputs and go through the setup procedure until you get to
OP1 (output 1) HART
Address
2B. Or go to Advanced Setup > Output 1 (HART) and find the menu item HART Address
3. Type in a value between 1 and 15 (default is 0 - point-to-point mode). This will switch output 1 over to
multi-drop mode.
4. Check that outputs of other devices in the network do not have the same HART address
5. Exit to Normal Mode
For further information on device operation and configuration, please refer to section 4.1: Operating concept
and section 4.2: Setup.
A definition of the menu item HART address is given in section 4.2.3 Setup, summary of user functions
under C.4.5.0 HART address.
Networks using Ex-approved devices
Special instructions:
Please refer to special manuals supplied with the device if it is approved for use in potentially explosive
atmospheres.
Other means of network communication
Each OPTIWAVE is supplied ex-factory with the appropriate DTM for PACTware. The latest version is
available from the download centre on the KROHNE website. A user manual is supplied on a CD-ROM with
the device.
OPTIWAVE 7300 C 30