ONICON F-3100 MOD - Manual (Page 7)

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F-3100-MOD Flow Meter Network Interface Installation Guide 05/14 - 0725-1 Page 7
1.5 NETWORK SIGNAL CONNECTIONS
MODBUS RS485, 2-wire (half-duplex) serial output connections are made at terminals 7 and 8 as
shown below. Incoming and outgoing RS485 cable shield wires should be connected together, but
must not be connected to the meter.
IMPORTANT NOTE
The meter will automatically exit the program after 60 seconds of no activity.
i
1.6 RS485 BAUD RATE, BIASING AND TERMINATION
1.6.1 Baud Rate and Parity
Every ONICON F-3100 is individually programmed at the factory with application specific
data provided by the customer during the process of ordering the meter. This normally
includes the Baud rate, parity and network address settings. If the information was
provided, the meter will be configured to the appropriate settings. If this information was
not provided, the meter default settings are:
Baud rate: 9600 Parity: Even Network Address: 017
The available Baud rate settings are 4800, 9600, 19200 and 38400. The available parity
settings are odd, even or none. The network address can be from 1 – 247. The Baud rate,
parity and address settings can be changed via the user interface/display on the front of
the meter. The information below details the process of entering the program mode and
changing the address, baud rate and parity settings.
1.6.1.1 Entering The Program Mode:
F-3100 Terminals
7
8
+
-
Shields
Outgoing cable
Incoming cable
Black
Red
Briefly press enter. The display will change to “keycode L2:00000” with the cursor
flashing under the leftmost digit. Using the up arrow key to increment the digits and
the right arrow key to move the cursor, enter a code of 11111. Briefly press enter. The
MAIN MENU page will appear with sub-menu 1–Sensor shown as the selected option.