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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 this manual, using as weight value the
one received via serial port.
The instrument supports the following 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
).
WEIMOD MODE
The instrument works as if it were directly connected to the load cell, therefore calibrations and zero
settings can be done. The protocol used is Modbus (the receiving instrument works as master and
the transmitting one as slave).
Procedure:
1.
TRANSMITTING INSTRUMENT
(see section
SERIAL COMMUNICATION SETTING
in the
transmitting instrument manual)
select the desired serial port
set
protocol
set the serial communication parameters
set the desired filter value (see section
FILTER ON THE WEIGHT
in the transmitting
instrument manual)
2.
RECEIVING
INSTRUMENT
(see section
SERIAL COMMUNICATION SETTING
)
select the desired serial port
set the
mode
It’s not possible to enable this function on several serial ports; in case of conflict,
the last serial set remains active.
set the serial communication parameters as on the transmitting instrument:
-
: transmission speed (2400, 4800, 9600, 19200, 38400, 115200; default: 9600)
-
: transmitting instrument address (from 1 to 99; default: 1)
-
: delay in milliseconds which elapses before the instrument replies (from 0 to
200 ms; default: 0)
-
:
-
: no parity (default)
Summary of Contents for W200-MU
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