Bronkhorst®
Instruction Manual FLEXI-FLOW™ Compact
9.17.158A
35
Value
Mode
Instrument action
Setpoint source
20
Valve Steering
Controller disabled, setpoint redirected to
Valve output
22
Valve Safe State
Force instrument in
·
Default value: 0
·
If
Control mode
is changed to value 9, the instrument returns to the default control mode at the next power-up or restart.
All other values are retained.
Calibration Mode
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Unsigned char
RW
B
0, 9, 255
58
1/4
0x0E61/3682
After enabling calibration mode by means of parameter
Control Mode
, this parameter is used to start the autozero function
of the flow sensor. The following modes are supported:
Value
Description
0
Idle (no action)
9
Start zeroing
255
Error (result of previous calibration mode)
4.3
Multi-parameter addressing
This section lists all parameters that are available on all
, including their FLOW-BUS and
Modbus addresses. Classification is consistent with section
. See the according subsections for detailed
parameter descriptions.
General address derivation using offset
In a Modbus system, parameters of communication channels 2 and 3 can be accessed by applying an offset to the Modbus
PDU address of the channel 1 parameter:
·
For address range 0x0000…0x0FFF, add 0x20 to the Modbus PDU address for channel 2, or 0x40 for channel 3.
·
For address range 0x8000…0xFFFF, add 0x100 to the Modbus PDU address for channel 2, or 0x200 for channel 3.
On FLOW-BUS, parameters of communication channels 2 and 3 can be accessed by applying an offset to the process
number of the channel 1 parameter:
·
Add 1 to the process number for channel 2
·
Add 2 to the process number for channel 3
Measurement and control
Name
Channel 1
Channel 2
Channel 3
FLOW-BUS
Modbus
FLOW-BUS
Modbus
FLOW-BUS
Modbus
Measure (8)
1/0
0x0020
2/0
0x0040
3/0
0x0060
Setpoint (9)
1/1
0x0021
2/1
0x0041
3/1
0x0061
Setpoint Slope (10)
1/2
0x0022
2/2
0x0042
3/2
0x0062
Temperature (142)
33/7
0xA138
34/7
0xA238
35/7
0xA338
Fmeasure (205)
33/0
0xA100
34/0
0xA200
35/0
0xA300
Fsetpoint (206)
33/3
0xA118
34/3
0xA218
35/3
0xA318
8
15
21