PRODUCT DESCRIPTION
The transceiver RRF is an interface converter from Rs232-Rs422/485-USB to Radio Frequency 868 MHz,
with 3 modes of operation: DIRECT, SINGLE and MULTI, selectable via software through a special configu-
rator. The data format is fixed for all modes: 38400, N, 8, 1.
RRF installation and operating manual
TRF
INDICATOR
RRF
RS232
RS485
Application 2 (SINGLE): acquisition of a single weight from a TRF through an indicator
UNIT B
RRF
RS232
RS485
Application 1 (DIRECT): wireless interface between two units
RRF
UNIT A
USB
RS232
RS485
USB
Pag. 4
Used in pairs, simulates a serial connection using a wireless connection. (Application 1).
DIRECT MODE
MULTI MODE
This mode is used to capture the weight from multiple weight transmitters, model TRF (up to 15): in this case
the RRF transceiver communicates with the TRF and made available on the serial port (or USB) a string with
all the weight obtained. (Applications 4, 5 and 6).
The RF communication frequency is 868MHz, with power up to 10mW, with 7 operation channels selectable
from dip-switch for installations where are present multiple RF devices.
The power is at 5Vdc and can be supplied via the USB port when the transceiver is connected to a PC, oth-
erwise can be provided by the weight indicator we produce.
The RRF has programmable operating parameters, such as RF Power and the Communication Protocol.
The programming of the operating parameters is made through a PC application that allows you to easily
configure and just in few steps the system used (TRF and RRF).
It is used to interface with the weight transmitter for load cell, model TRF, in the manners explained below. In
particular it can be used to gain the weight from a single transmitter through the communication port Rs232,
Rs485 or USB. (Applications 2 e 3).
SINGLE MODE
TRF
RRF
USB
PC
Application 3 (SINGLE): acquisition of a single weight from a TRF through a PC
