Sierra INNOVA-MASS 241-VTP User Manual
Page 82
Appendix E MODBUS Commands
Series 24-HP Instruction Manual
E-4
IM-24-HP
gramming Output Menu’s “Modbus Units” item. The display units
strings may be examined by accessing their associated registers.
Each of these units string registers contain 2 characters of the
string, and the strings may be 2 to 12 characters in length with
unused characters set to zero. Note that the byte order affects the
order in which the strings are transmitted. If the Modbus Order
menu (see page 2) is set to 0-1:2-3 or 2-3:0-1, then the characters
are transmitted in the correct order; if set to 1-0:3-2 or 3-2:1-0,
then each pair of characters will be transmitted in reverse order.
Registers
Variable
Data type
Units
Function
code
Addresses
65100-65101
Serial number
unsigned long —
03, 04
30525-30526
Totalizer
unsigned long display units*
03, 04
524-525
32037-32042
Totalizer units
string
—
03, 04
2036-2041
30009-30010
Mass flow
float
display units*
03, 04
8-9
30007-30008
Volume flow
float
display units*
03, 04
6-7
30005-30006
Pressure
float
display units*
03, 04
4-5
30001-30002
Temperature
float
display units*
03, 04
0-1
30029-30030
Velocity
float
ft/sec
03, 04
28-29
30015-30016
Density
float
display units*
03, 04
14-15
30013-30014
Viscosity
float
cP
03, 04
12-13
30031-30032
Reynolds number
float
—
03, 04
30-31
30025-30026
Vortex frequency
float
Hz
03, 04
24-25
34532
Gain
char
—
03, 04
4531
30085-30086
Vortex amplitude
float
Vrms
03, 04
84-85
30027-30028
Filter setting
float
Hz
03, 04
26-27
The following registers are available with the energy meter firm-
ware:
Registers
Variable
Data type
Units
Function
code
Addresses
30527-30528
Totalizer #2
unsigned long display units*
03, 04
526-527
32043-32048
Totalizer #2 units
string
—
03, 04
2042-2047
30003-30004
Temperature #2
float
display units*
03, 04
2-3
30011-30012
Energy flow
float
display units*
03, 04
10-11