Bronkhorst®
Instruction Manual ES-FLOW™
9.17.116B
31
Access
R
The parameter is read-only
RW
The parameter can be read and written to
RW
The parameter is protected and can only be written to when
Init Reset
is set to value 'unlocked' first
Range
Some parameters only accept values within a certain range:
[x]
Minimum value of the range
[y]
Maximum value of the range
FlowDDE
Parameter number within FlowDDE
FLOW-BUS
Within the FLOW-BUS protocol (ProPar when using RS232), parameters are identified by a unique combination of a process
number and a parameter number:
[Pro]
Process number
[Par]
Parameter number
Consult
Instruction manual RS232 interface
(document no. 9.17.027) for detailed information.
This document can be downloaded from
http://www.bronkhorst.com/en/downloads
Modbus
In the Modbus protocol, parameters are accessed by specifying their unique decimal register number or corresponding PDU
address (Protocol Data Unit). The PDU address is the hexadecimal translation of the register number minus 1, e.g. register
number 1 corresponds to PDU address 0x0000, register number 11 corresponds to PDU address 0x000A:
[address]
Hexadecimal PDU address
[index]
Decimal register number
Modbus address blocks are two bytes big. Larger data types use up to 8 subsequent address blocks, resulting in a
maximum variable length of 16 bytes. Values longer than the maximum length are truncated.
Other interface protocols
Consult the specific fieldbus manual for accessing parameters via fieldbus communication (see
).
3.4.2
Special parameters
Init Reset
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Unsigned char
RW
82/64
7
0/10
0x000A/11
Init Reset
is used to unlock secured parameters (designated by a
symbol) for writing. This parameter can be set to the
following values:
Value
Description
64
unlocked, secured parameters can be read and written to
82
locked, secured parameters are read-only
At power-up,
Init Reset
is always set to ‘Locked’ (value 82).
Reset
Type
Access
Range
FlowDDE
FLOW-BUS
Modbus
Unsigned char
R
0…7
114
115/8
0x0E68/3689
This parameter is used to reset the program, counter or alarms.
