Bronkhorst®
Instruction Manual mini CORI-FLOW™ M1x
9.17.050O
15
Alternatively, connect the instrument to a Bronkhorst® readout and
control unit (BRIGHT/E-8000). In this case, the instrument can also be
powered through the readout and control unit. With the display interface
and control buttons most digital parameters and functions can be used.
For RS-232 communication with a third party micro controller device (e.g. a PLC, refer to the hook-up diagram for RS-232
operation to connect the required signals).
2.6.3
Digital RS-485 connection (fieldbus)
If the instrument is provided with a dedicated fieldbus interface, it can be
operated digitally in a fieldbus system, using RS-485 communication. In
FLOW-BUS, Modbus and DeviceNet™ systems, the fieldbus connector (5-
pin M12) can also be used to power the instrument. In PROFIBUS DP
systems, the instrument is always powered through the 8-pin DIN power
connector.
Never
power the instrument simultaneously from
two different power sources
(e.g. fieldbus and Plug-in Power Supply).
Doing so will irreversibly damage the printed circuit board and the instrument will have to be repaired before it can be
used.
Always check the total power consumption of your instruments before connecting them to a fieldbus system. Do not exceed
the maximum power of the power supply unit.
If you need assistance with setting up a fieldbus configuration, contact your Bronkhorst representative for information.
2.6.3.1
FLOW-BUS
FLOW-BUS is a Bronkhorst® designed fieldbus, based on RS-485 technology, for digital communication between devices,
offering the possibility of host-control by a Windows computer.
Characteristics:
·
Baud rate 187500 (default) or 400000 Baud
·
+15…24 Vdc supply voltage
·
Easy installation and communication with other Bronkhorst® devices
·
Automatic node search and bus optimization (gap fixing)
·
RS-232 communication (
) with Windows computer (local host)
·
Connection of up to 120 instruments on a single bus
·
Maximum bus length: 600 m
Consult
Instruction manual FLOW-BUS interface
(document no. 9.17.024) for more information about setting up a
FLOW-BUS network.
Power the instruments in a FLOW-BUS local-host system by hooking-up the power supply directly on the FLOW-BUS line
and not by powering a set of instruments through the 8-pin DIN connector on one of the digital instruments.