Aalborg Vortex - Manual (Page 20)

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4.5.5 Communication Parameters and Connections
The digital interface operates via RS-232 (optional RS-485) and provides access
to applicable internal data including: flow, temperature*, pressure*, totalizers
and alarm settings, flow calibration settings, process fluid parameters and engi-
neering units selection.
Communication Settings for RS-232/RS-485 communication interface:
Baud rate: … … … … … … … 9600 baud
Stop bit: … … … … … … … … 1
Data bits: … … … … … … … . 8
Parity: … … … … … … … None
Flow Control: … … … … … … … None
RS-232 communication interface connection:
Crossover connection has to be established:
Terminal TB2 Pin 1 (Tx-) ------------ RS-232 RX (pin 2 on the DB9 connector)
Terminal TB2 Pin 2 (Rx+) ------------ RS-232 TX (pin 3 on the DB9 connector)
Terminal TB2 Pin 3 ------------- RS-232 SIGNAL GND (pin 5 on the DB9
connector)
RS-485 communication interface connection:
The RS485 converter/adapter must be configured for: multidrop, 2 wire, half
duplex mode. The transmitter circuit must be enabled by TD or RTS (depending on
which is available on the converter/adapter). Settings for the receiver circuit
should follow the selection made for the transmitter circuit in order to eliminate
echo.
Terminal TB2 Pin 1 (Tx-) --------------- RS-485 T(-) or R(-)
Terminal TB2 Pin 2 (Rx+) --------------- RS-485 T(+) or R(+)
Terminal TB2 Pin 3 --------------- RS-485 GND (if available)
5. LCD KEYPAD OPERATION:
DATA ENTRY AND CONFIGURATION
5.1 Display Indications
Initially, after the power is first turned on, the Banner Screen is shown for 1 sec-
ond, then flow meter model number is shown in the first line of the display and
the revisions for EEPROM table and firmware in the second line. Subsequently
the actual process information is displayed.