Bronkhorst EL-FLOW Base 2014 - Manual (Page 24)

BRONKHORST HIGH-TECH
3.7.2 Basic Parameters
Measured Value (Measure)
Type Access Range FlowDDE FlowBus ModBus
Unsigned int R 0…41942 8 1/0 0x0020/33
The measured value indicates the amount of mass flow metered by the instrument.
The signal of 0...100% will be presented in a range of 0...32000. The maximum signal to be expected is
131.07 %, which is: 41942.
Setpoint
Type Access Range FlowDDE FlowBus ModBus
Unsigned int RW 0…41942 9 1/1 0x0021/34
Setpoint is used to set the wanted amount of mass flow.
Signals are in the same range as the measured value, only setpoint is limited between 0 and 100 %.
Control Mode
Type Access Range FlowDDE FlowBus ModBus
Unsigned int RW 0…18 12 1/4 0x0024/37
The Controller mode is used to select different functions of the instrument. The following modes are
available:
Value Mode Instrument action Setpoint source
0 DIGITAL_INPUT Controlling RS232/RS485
1 ANALOG_INPUT Controlling Analog input
3 VALVE_CLOSE Valve closed
4 CONTROLLER_IDLE Idle
5 TEST_MODE Test mode enabled
7 SETPOINT_100 Controlling @100% Fixed 100%
8 VALVE_OPEN Valve full opened
9 CALIBRATION_MODE Calibration mode enabled
12 SETPOINT_0 Controlling @0% Fixed 0%
18 RS232_INPUT Controlling RS232 FlowBus
After power-up the control mode will always be set to DIGITAL_INPUT or ANALOG_INPUT, depending on
customer’s requirement. Check chapter 4.1.6, Changing Default Control Mode, to change the start-up
mode.
Page 24 EL-FLOW Base Series Mass Flow Controllers 9.17.061