Onicon F-3100 MOD Manuel d'utilisateur télécharger pdf (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.

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 specic

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 congured 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

Shields

Outgoing cable

Incoming cable

Black

Red

Briey press enter. The display will change to “keycode L2:00000” with the cursor

ashing 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. Briey press enter. The

MAIN MENU page will appear with sub-menu 1–Sensor shown as the selected option.

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Onicon F-3100 MOD Manuel d'utilisateur Page 7