Bronkhorst®
Instruction Manual ES-FLOW™ 1xxC
9.17.153A
32
The slave instrument polls the output value of its master periodically and uses the slave factor to set its own flow relative to
the master's.
To prevent damage to the instruments an/or the system(s) they are connected to, be sure to avoid circular references
between devices on the same fieldbus. The FLOW-BUS system does not have a protection mechanism.
Master Node
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Unsigned char
RW
1…128
158
33/14
n/a
Set the master node for the instrument.
Note that this parameter is only effective in a FLOW-BUS network with RS-485 communication.
Slave Factor
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Float
RW
0…500
139
33/1
0xA108…0xA109/41225…41226
The controller output from the master instrument is multiplied by
Slave Factor
/100% to get the slave instrument setpoint.
In systems other than FLOW-BUS via RS-485,
Slave Factor
is effective only if
Control Mode
is set to 'Analog slave', and the
analog output signal of the master instrument is redirected to the input of the slave instrument.
Example:
·
master output = 80%
·
Slave Factor
= 50
_
slave instrument setpoint = 80% x 50%/100% = 40%
6.1.7
Device identification
User Tag
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Unsigned char[16]
RW
-
115
113/6
0xF130…0xF137/ 61745…61752
With this parameter, the instrument can be given a custom tag name, with a maximum of 16 characters.
Customer Model
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Unsigned char[16]
RW
B
-
93
113/4
0xF120…0xF127/ 61729…61736
This parameter is used to add extra information to the model number information, such as a customer-specific model
number.
Serial Number
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Unsigned char[20]
R
B
-
92
113/3
0xF118…0xF11F/ 61721…61728
Instrument serial number for identification.
BHT Model Number
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Unsigned char[35]
RW
B
-
91
113/2
0xF110…0xF117/ 61713…61720
This parameter shows the Bronkhorst® instrument model type information.
