Master/Slave Configuration (Flow-Bus) - BRONKHORST ES-FLOW 1 C Series Instruction Manual

PID-Kp
Type
Float
PID controller proportional action, multiplication factor.
PID-Ti
Type
Float
PID controller integral action in seconds.
PID-Td
Type
Float
PID controller derivative action in seconds. The default value is 0.0.
Open From Zero Response
Type
Unsigned char
Response factor, applied to proportional action when opening the valve from 0%.
Default value: 128 (no correction)
·
· Other values adjust the controller gain (correction signal) as follows: Controller gain = Controller Speed * PID-Kp *
1.05 (response factor - 128)
Normal Step Response
Type
Unsigned char
Response factor, applied to proportional action during normal control (at setpoint step).
· Default value: 128 (no correction)
Other values adjust the controller gain (correction signal) as follows: Controller gain = Controller Speed * PID-Kp *
·
1.05 (response factor - 128)
Stable Situation Response
Type
Unsigned char
Stable situation response, applied when the controller is stable (within a 2% band around the setpoint).
· Default value: 128 (no correction)
Other values adjust the controller gain (correction signal) as follows: Controller gain = Controller Speed * PID-Kp *
·
(response factor - 128)
1.05
6.1.6

Master/slave configuration (FLOW-BUS)

Normally, there is no communication between the instruments in a fieldbus system. The FLOW-BUS protocol, however,
provides a feature to set up a master/slave relationship between two instruments. The typical behavior of a slave
instrument is to automatically set its own setpoint relative to the output (measurement value) of its master.
The output value of any instrument in a FLOW-BUS network is automatically available to all other instruments without
extra wiring. A slave instrument can also be a master to other instruments.
To setup a master/slave relationship between instruments, first determine which instrument should be the master and
which should be the slave, then set Control Mode of the slave instrument to 'FLOW-BUS Slave' (value 2) or 'FLOW-BUS Analog
Slave' (value 13), depending on how the setpoint should be calculated (see parameter
9.17.153A
Access Range
B
RW 0...1E+10
Access Range
B
RW 0...1E+10
Access Range
B
RW 0...1E+10
Access Range
B
RW 0...255
Access Range
B
RW 0...255
Access Range
B
RW 0...255
Instruction Manual ES-FLOW™ 1xxC
Bronkhorst®
FlowDDE FLOW-BUS
167 114/21
FlowDDE FLOW-BUS
168 114/22
FlowDDE FLOW-BUS
169 114/23
FlowDDE FLOW-BUS
165 114/18
FlowDDE FLOW-BUS
72 114/5
FlowDDE FLOW-BUS
141 114/17
Modbus
0xF2A8...0xF2A9/62121...62122
Modbus
0xF2B0...0xF2B1/62129...62130
Modbus
0xF2B8...0xF2B9/62137...62138
Modbus
0x0E52/3667
Modbus
0x0E45/3654
Modbus
0x0E51/3666
Control Mode).
31