Revision: 3.0.3
9
Appendix1-Serial Interface
9.1
Overview
The transmitter has perfect communication p
Two basic schemes can be chosen for netwo
or the RS485 communication method via seri
dated instruments in old monitoring netwo
advantages such as low hardware investment
When the serial port communication method
address identification code (in window M46
command set with [W] is used as commun
flowmeter can be used to control the opening
other equipment. The analog input of the sy
The system provides an RTU function for flo
RS-485(0~1000m) can be directly used for da
The command answer mode is used in data tr
answers correspondingly.
9.2
Direct connection via RS-485
Drawing of Upper Com
Notices:
When the flowmeter is in flowmeter network
42(2AH*) and 38(26H&). The Network IDN
9.3
Communication protocol a
The communication protocol format used by
flowmeter protocol.
The host device requests
asynchronous communication (Primary station
single byte data format (10 bits): one start bit
DC+ DC-
GE
DC 10 - 36V
OCT+ OCT-
OCT OUT
RL+ RL-
RELAY
D116 Series Ultrason
ace Network Use and Communications
protocol. It can also be connected to a RS-485.
tworking, i.e. the analog current output method only using
serial port directly using the flowmeter. The former is sui
tworks. The later is used in new monitoring network
ent and reliable system operation.
thod is directly used to implement a monitoring netw
M46) of the flowmeter is used as network address cod
mmunication protocol. Thus analog current loop and
opening of a control valve. The relay output can be used
system can be used to input signals such as pressure and
flow measurement.
r data transmission link for a short distance.
ta transmission, i.e. the host device issues commands and
485 to the host device
omputer RS-485 network data acquisition system
ork ,the following network IDN:13(0DH ENTER), 10(0
N is set in M46.
l and the use
by the ultrasonic flowmeter is an expanded set of the Fu
sts the flowmeter to answer by sending a "command". T
tion; computer system; ultrasonic flowmeter) is general
bit, one stop bit and 8 data bits. Check bit: NONE.
PC
RS485 turn RS232
E UP+ UP-
E DN+ DN-
TRANSDUCER
Tx Rx GND
RS232(RS485)
A B
I+ I-
4-20mA
sonic Flowmeter
Page 41 of 53
ons Protocol
sing the flowmeter
suitable to replace
rk systems. It has
twork system, the
ss code. Expanded
and OCT output of
ed to power-on/off
e and temperature.
and the flowmeter
0AH NEWLINE),
Fuji FLV series
. The baud rate of
rally 9600BPS. A