Bronkhorst IQ+FLOW (from 01-07-2013) - Manual (Page 21)

Bronkhorst High-Tech B.V.
IQ+FLOW 21 9.17.045
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 IQ + FLOW®. 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