Bronkhorst Multibus - Manual (Page 8)

BRONKHORST ®
Page 8 Operational instructions for digital multibus instruments 9.17.023
Digital instruments can be operated by means of:
1. Analog interface. (0...5Vdc/0...10Vdc/0...20mA/4...20mA)
2. RS232 interface (connected to COM-port by means of special cable (Default speed 38400 Baud)
3. FLOW-BUS
4. PROFIBUS-DP
5. DeviceNet
6. Modbus
7. EtherCAT
Option 1 and 2 are always present on Multibus instruments. Option 3, 4, 5 and 6 are optional. Operation via analog
interface, RS232 interface and an optional field bus can be performed at the same time. A special parameter called
“control mode” indicates to which setpoint the controller should listen: analog or digital (via field bus or RS232). The
RS232 interface behaves like a FLOW-BUS interface. When using more digital interfaces at the same time, reading can
be done simultaneously without problems. When changing a parameter value, the last value send by an interface will
be valid.
Also the micro push-button switch and the LED’s on top of the instrument can be used for manual operation of some
options.
• The green LED will indicate in what mode the instrument is active.
• The red LED will indicate info / error / warning situations.