WIKA DIH50 Betriebsanleitung Seite 14

6. Commissioning, operation
6.1.2 Operating mode: HART
The master mode enables the modification of the measuring range, the unit, the format,
the damping and the polling address of the connected HART
modifications to the configuration of the transmitter (e.g. selection of the sensor) are not
possible.
EN
During the starting procedure, the field indicators try to contact the connected HART
transmitter in the master mode and to apply its settings (unit and measuring range). During
the connection establishment, the status line shows the message "Connecting HART
When a HART
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switches to the HART
transmitter. This procedure is repeated whenever the power supply is switched on.
When pressing any key during the starting process or the device has not detected any
HART transmitter during approx. 70 seconds, the digital indicator switches to the basic
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mode and starts operation on the basis of the factory settings.
6.1.3 Operating mode: Multidrop (model DIH52)
In this specially defined operating state for HART
set to 4 mA and the measuring information is transmitted via the HART
to the control room. To enable the displaying of the measured value of a transmitter, the
address of the desired transmitter must be set in the "Address" menu item.
If the HART ® address is modified during operation, the establishment of a new connection
is started during which, however, the sensor must respond immediately in order to
complete the connection establishment.
The digital indicators show the measured values of the primary variable transmitted via
HART to the control room. The display is passive, i.e. the transmission of the measured
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values must be requested by the control room. The devices function as secondary master
with respect to the sensor during the parameterisation.
6.1.4 Operating mode: Basic mode, 4 ... 20 mA (models DIH50, DIH52)
In the basic mode, all settings of the digital indicator must be carried out manually by
means of the front-side keys.
To navigate in the menu levels, four keys with the following functions are available:
▲ (UP) One menu item up
▼ (DOWN) One menu item down
OK Calls the programming menu
ESC Exits the programming menu
- Back to the previous menu level in the menu guidance
- Return from the edit function without saving the modification
see also chapter 8 "Menu guidance"
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master (model DIH52)
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sensor is detected, the HART
mode and starts operation using the settings received from the
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transmitter. Further
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symbol is displayed. The field indicator
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transmitters, the current signal is firmly
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WIKA operating instructions models DIH50, DIH52
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.
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communication
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