Siemens SITRANS FC410, Руководство по эксплуатации, Страница: 129 / 160

Modbus holding registers
A.3 Modbus holding registers tables
FC410 with Modbus
Operating Instructions, 02/2016, A5E33120874-AC
127
Modbus
address
Data type /
Size [bytes]
Parameter Description Default
value [unit]
Value range Access
level
3018 Unsigned /
4
Totalizer fixed
point part
The totalized MASS value in
kg. Most significant word of
the totalizer (MSW).
The format of the totalizer is
a TotalType.
The TotalType represent a
fixed point value in the
MSW 32 bit and a fractional
part in the LSW 32 bit.
Example: 2.03 would be
represented as fixed point
part = 2 and fractional part =
30000000
Note: the data type is
unsigned32, but shall be
converted into a signed32
by the host since signed32
is not supported in the
device.
Example conversion to
float64 tag by the host:
Float64 tag = fixed point
part + (fraction
part/1000000000.0);
0 [kg]
Min -
2147483648
Max
2247483647
Read Only
3020 Unsigned /
4
Totalizer fractional
part
The totalized MASS value in
kg. Least significant word of
the totalizer (LSW).
The format of the totalizer is
a TotalType.
The TotalType represent a
fixed point value in the
MSW 32 bit and a fractional
part in the LSW 32 bit.
Example: 2.03 would be
represented as fixed point
part = 2 and fractional part =
30000000
Note: the data type is
unsigned32, but shall be
converted into a signed32
by the host since signed32
is not supported in the
device.
Example conversion to
float64 tag by the host:
Float64 tag = fixed point
part + (fraction
part/1000000000.0);
0 [kg] Min -999999999
Max 999999999
Read Only
2612 unsigned /
2
Reset totalizer Reset totalizer Value - Enter 1 to reset Read /
Write