Bronkhorst IQ+FLOW (till 01-07-2013) - Manual (Page 20)

9.17.045 page 20
4. Advanced operation
4.1 Reading and changing instrument parameters
4.1.1 Special parameters
!
All parameters described in this chapter have influence on the behaviour of the mass flow meter. Please
be aware that wrong settings can disorder the output. To avoid unintential changes, some parameters
are locked (shown by the  symbol). To unlock parameters set parameter ‘Init Reset’ to ‘Unlocked’.
Init Reset
Type Access Range FlowDDE FLOW-BUS Modbus
Unsigned char RW 82/64 7 0/10 0x000A/11
The ‘Init Reset’ parameter is used to unlock advanced parameters for writing. This parameter can be set to the
following values:
Value Mode Instrument action
82 Locked Advanced parameters are read-only
64 Unlocked Advanced parameters are writeable and readable
This parameter is always set to ‘Locked’ at power-up.
Control Mode
Type Access Range FlowDDE FLOW-BUS Modbus
Unsigned int RW 0…255 12 1/4 0x0024/37
The ‘Control mode’ is used to select different functions of the instrument. The following modes are available:
Value Mode Instrument action Setpoint source Master
source
Slave
factor
0 BUS/RS232 Controlling RS232/RS485
1 Analog input Controlling Analog input
2 FLOW-BUS slave Controlling as slave of other
instrument on bus
FLOW-BUS * slave
factor / 100%
FLOW-BUS Slave
factor
3 Valve close Close valve
4 Controller idle Stand-by on BUS/RS232
Controlling is stopped; Valve Out
freezes in current position
5 Testing mode Test mode enabled (factory only)
6 Tuning mode Tuning mode enabled (factory only)
7 Setpoint 100% Controlling at setpoint 100% Fixed 100%
8 Valve fully open Valve fully opened
9 Calibration mode Calibration mode enabled (factory
only)
10 Analog slave Controlling as slave of other
instrument on analog input
Analog input *
slave factor / 100%
Analog input Slave
factor
12 Setpoint 0% Controlling at setpoint 0% Fixed 0%
13 FLOW-BUS
analog slave
Controlling as slave of other
instrument on bus, slave factor is
set with signal on analog input
FLOW-BUS *
analog input *
slave factor / 100%
FLOW-BUS *
analog input
Analog
input
18 RS232 Controlling RS232
20 Valve steering Setpoint is redirected to Valve Out
with controller idle
21 Analog valve
steering
Analog input is redirected to Valve
Out with the controller idle
22 Valve safe state