LAUMAS W200-S, Инструкция по установке и эксплуатации

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WEIGHT READING VIA SERIAL PORT
Overview:
By transmitting instrument, it means the one connected to the load cell.
By receiving instrument, it means the one which receives the weight via serial port.
This function allows the instrument to read the weight by another instrument (transmitting
instrument) rather than by a load cell, via the RS485 or RS232 serial port. Outputs, serial ports and
analog output (if present) continue to work as described in the receiving instrument manual, using as
weight value the one received via serial port.
The instrument supports two different modes of weight reading via serial port:
-

(see section WEIMOD MODE )
-  (see section WEIRIP MODE )
WARNING
: in order to use the weight reading via serial port, the weight reading mode
must be set as

(see section DATA DELETION AND PROGRAM SELECTION ).
RS485 CONNECTION
INSTRUMENT Connector Pin Signal
W200
W200BOX
TERMINAL
17 RS485: -
18 RS485: +
2 RS485: SHIELD, GND
If the RS485 network exceeds 100 metres in length or baud-rate is higher than 9600, two
terminating resistors are needed at the ends of the network. Two 120 ohm resistors are
to be connected, between the “+” and “–“ terminals of the line on terminal strip of the
instrument furthest away in the network. If should be there different instruments or
converters, refer to the specific manuals to determine whether it is necessary to connect
the above-mentioned resistors.
Transmitting instrument
- SUPP
LY
RS485
- SUPP
LY
RS485
Receiving instrument