Bjong
–
User Manual
–
V1.0 - pg.40
The
Bjong
connector has two pins for serial communication and two power pins whose
voltage is that of the connected external battery.
Before proceeding with the connection, make sure to make the correct connection of the
external sensor to avoid, for example, inverting the polarity of the supply voltage.
Refer to the chapters
“
Wiring and connections
”
and
“
Power supply
”
to understand the
connector pins, the colors of the cables supplied by B.M. Tecnologie Industriali and the
applicable voltage/current limits.
B.M. Tecnologie Industriali is not liable for any damage caused to the system or sensors due
to incorrect connection or incorrect use.
Connection
: it is possible to view the connection settings of
the RS485 serial port. Through a tap on the magic wand you
access the edit window.
Changing the setting takes effect immediately once the
configuration has been loaded on the instrument.
Warm up time
: it is the awakening time, expressed in
seconds, necessary for the sensors to provide a valid
reading after receiving the supply voltage. The warm up is
significant in the discontinuous operating mode, when the
power is supplied only for the time strictly necessary for
reading.
To ensure correct reading, the time must be set more than
all the times necessary for the individual sensors connected.
Time out
: it is the waiting time, expressed in milliseconds,
before deciding the non-response of a sensor to the request
for a register. It is possible to insert two different times
according to the continuous or discontinuous operating
mode.
Delay
: it is the time, expressed in milliseconds, of a pause
after reading a variable before moving on to reading the
next variable. Also in this case it is possible to insert two
different times according to the instrument operating
mode.
Variables
: a list of defined variables is available in the
variables section. In the example image you can see the
definition of two variables read by two distinct slaves (id 7
and id 9).
In the first case, it concerns the reading of 5 coils (function
0x01) starting from register 1, not PLC.
The second variable is instead a Holding register (function
0x03) interpreted as Float in BADC format. Register address
15, not PLC.