KROHNE IFC 100 Converter Modbus EN - Manual (Page 12)

6
MODBUS PROTOCOL
12
IFC 100
www.krohne.com 08/2014 - 4001410101 - AD Modbus IFC 100 R01 en
6.7 Input registers
All input registers in the Modbus protocol address range from 30000 to 38998 are mapped into
the range 0 to 8998. All input registers in the Modbus protocol address range from 20000 to
20998 are mapped into the range 9000 to 9998. This is done to give systems with restriction on
the address range access to the device.
Measurement and status values are read only and can be accessed as Modbus "Input Registers".
Cyclic GDC objects are mapped to Modbus Registers.
Function code is 04 (0x04).
Input register 30018 is not used up to now. This is included to fill the gap between the float and
double float values and allows to read the full range of registers.
Modbus protocol
address Description and settings Type Number of registers
1st 2nd
30000 0 flow speed flow speed flow speed flow speed [m/s] float 2
30002 2 volume flow volume flow volume flow volume flow [m 3 /s] float 2
30004 4 mass flow mass flow mass flow mass flow [kg/s] float 2
30006 6 coil temperature coil temperature coil temperature coil temperature [K] float 2
30008 8 conductivity conductivity conductivity conductivity [S/m]
This value may not be measured.
Depending on register (4)2003.
0 = off (not measured)
1 = conductivity [S/m]
2 = cond. + empty pipe (S) [S/m]
3 = cond. + empty pipe (F) [S/m]
4 = cond. + empty pipe (I) [S/m]
float 2
30010 10 diagnosis value diagnosis value diagnosis value diagnosis value
This value may not be measured.
Depending on register (4)2011.
25 = off (not measured)
31 = electrode noise [m/s]
8 = terminal 2 DC [Volt]
9 = terminal 3 DC [Volt]
float 2
30012 12 Display Channel 1 Display Channel 1 Display Channel 1 Display Channel 1
Represents the value on the first line of
the first measurement screen in SI units
float 2
30014 14 Display Channel 2 Display Channel 2 Display Channel 2 Display Channel 2
Represents the value on the first line of
the second measurement screen in SI
units
float 2
30016 16 Operating time Operating time Operating time Operating time [s] float 2
30018 18 Not used, returns zero float 2
30020 20 Counter 1 Counter 1 Counter 1 Counter 1 [m 3 ] or [kg] double float 4
30024 24 Counter 2 Counter 2 Counter 2 Counter 2 [m 3 ] or [kg] double float 4
30028 28 Not used, returns zero double float 4
30032 32 long status sensor long status sensor long status sensor long status sensor byte [4] 2
30034 34 long status device long status device long status device long status device byte [4] 2
.book Page 12 Monday, July 28, 2014 11:32 AM