BRONKHORST FLOW-BUS User Manual

BRONKHORST HIGH-TECH B.V.
9.17.024 Page 9
FLOW-BUS
IN/OUT
3
1
7.03.297
B
EGIN TERMINATOR
7.03.241
M
ODULAR Y-ADAPTER
USERTAG AIR
10.00 ln/min
3
1.09.240
E
ND TERMINATOR
EL-FLOW
mass flow meter /controller
FLOW-BUS
CE Ruur lo-Holland
EL-FLOW
mass flow meter /controller
FLOW-BUS
CE Ruurlo-Holland
EL-FLOW
mass flow meter/controller
FLOW-BUS
CE Ruur lo-Holland
EL-FLOW
mass flow meter/contr oller
FLOW -BU S
CE Ruurlo-Hol land
7.03.299
RJ45 Multi-port adaptor
7.03.299
RJ45 Multi-port adaptor
EL-FLOW
mass flow meter/controller
FLOW-BUS
CE Ruurlo-Holland
EL-FLOW
mass flow meter/controller
FLOW-BUS
CE Ruurlo-Holland
EL-FLOW
mass flow meter/controller
FLOW-BUS
CE Ruurlo-Holland
EL-FLOW
mass flow meter/controller
FLOW-BUS
CE Ruurlo-Holland
Node 1
Node 2
Node 3
Node 4
Node 5
Node 6
Node 7
Node 8
Node 9
Node 10
PowerIsolator
1.09.239
R
S
2
3
2
2 FLOW-BUS
2.1 General
FLOW-BUS is a 3-wire, RS485-based fieldbus communication system for parameter value exchange between
digital BRONKHORST HIGH-TECH B.V. products.
In this system each instrument/device is equipped with a micro-controller for its own dedicated task but also for
exchanging parameter value information with other instruments/devices connected to the same FLOW-BUS
system.
2.2 Technical information
FLOW-BUS systems may have a minimum of 2 and a maximum of 126 connections.
The maximum length for datalines between the first and the last connection may be up to approx. 600 meters.
Longer distances are only possible in combination with special bus-repeater modules.
Each instrument/device connection T-part (stub) must be kept as short as possible (max. cable length 0.5
meter!).
The baudrate used to transport messages is 187.5 Kbaud.
FLOW-BUS is a multi-master network with a token-ring architecture.

BRONKHORST FLOW-BUS Specifications

General

Brand	BRONKHORST
Model	FLOW-BUS
Category	Measuring Instruments
Language	English