USER MANUAL [1.4]
Page 30
ATTENTION:
WHEN CONNECTING DIGITAL FLSs via RS485 AND RS232 AT THE
SAME TIME, THE NETWORK ADDRESS ‘0’ IS AUTOMATICALLY RESERVED FOR FLS
RS232. FOR THIS REASON, THE NUMBERING OF FLS RS485 MUST EXCLUDE THE
ADDRESS ‘0’.
In the section ‘Packet structure’ it is necessary to mark the necessary parameters to be transmitted
to the server.
“LLS 232” mode
– connecting an FLS (Fuel Level Sensor) using RS232 interface supporting
Omnicomm LLS protocol.
Connecting an FLS using RS232 interface is similar to connecting an FLS using RS485 but has
a number of specific features:
•
only one FLS can be connected;
•
RS232 interface is used;
•
the value will be transmitted from the FLS with the number ‘0’ (lls_l0, lls_t0).
The connection of the fuel level sensor via RS232 interface (to contacts ‘9’ and ‘21’ of the main
connector) is shown in Fig. 6.
Figure 6 – Diagram of connecting the FLS via RS232 DUT
The unique network address for the FLS in RS232 mode is not fundamental and can be set as
any sequence of symbols (see the Level Sensor User Manual); the symbol rate is 19200 baud.
