Bronkhorst®
Instruction Manual MI Series Industrial mini CORI-FLOW™
9.17.120A
21
3.7
Hardware interface
The instrument cover may only be opened in a dry and non hazardous environment. Before opening the cover, make sure
that the operating environment is perfectly safe and that the electrical components cannot be affected by moisture or
aggressive atmospheric components.
The wiring terminal box under the instrument cover provides a number of hardware
controls. Depending on the fieldbus interface (if applicable), the following controls are
available:
No. Control
Function
No fieldbus
FLOW-BUS /
Modbus
EtherCAT® /
PROFINET
PROFIBUS DP
1.
Bus termination
2.
Visual indications
3.
Node address selection
4.
Starting functions
5.
(micro USB) RS232 communication
3.7.1
LED indications
The LED indications from the wiring terminal box are redirected to the exterior of the
instrument. On the side of the fluid inlet, directly under the fieldbus connections, the
instrument is equipped with 3 LED indicators:
Indication
Color
Position
Description
Status
•
/
•
(bi-color; green/red)
Left
interface status
Mode
•
(green)
Middle
operational mode
Error
•
(red)
Right
error/warning messages
The tables below list the different LED indications:
•
Mode
Pattern
Time
Indication
off
continuous
Power-off or program not running
on
continuous
Normal operation mode
short flash
0.1 sec on,
2 sec off
No bus communication, valves are in safe state
blink
0.2 sec on,
0.2 sec off
Special function mode; the instrument is busy performing a special function (e.g.
auto-zero or self-test)
long flash
2 sec on,
0.1 sec off
Configuration mode; the baud rate and bus type for the Main terminal are set to
38400 and RS232 FLOW-BUS (ProPar) respectively