KROHNE IFC 050 Converter Modbus EN - Manual (Page 13)

MODBUS PROTOCOL
6
13
IFC 050
www.krohne.com 09/2012 - 4002202601 - AD Modbus IFC 050 R01 en
6.8 Holding registers
All holding registers in the Modbus protocol address range from 40000 to 49998 are mapped into
the range 0 to 9998. This is done to give systems with restriction on the address range access to
the device.
Some parameters of the device can be accessed as Modbus "holding registers".
Function code 03 (0x03) for "Read" operations and function code 16 (0x10) for "Write" operations.
The holding registers are grouped into the following different sections.
6.8.1 Counter parameters
Modbus protocol
address Description and settings Converter Fct.
No. Type Number of
registers
1st 2nd
40000 0 counter 1 function counter 1 function counter 1 function counter 1 function
1 = sum counter
2 = + counter
3 = - counter
0 = off
C3.1.1 byte 1
40001 1 counter 2 function counter 2 function counter 2 function counter 2 function
1 = sum counter
2 = + counter
3 = - counter
0 = off
C3.2.1 byte 1
41000 1000
set counter Cnt1 or read Cnt1 set counter Cnt1 or read Cnt1 set counter Cnt1 or read Cnt1 set counter Cnt1 or read Cnt1 [m 3 ] or [kg]
C3.1.4 float 2
41002 1002
set counter Cnt2 or read Cnt2 set counter Cnt2 or read Cnt2 set counter Cnt2 or read Cnt2 set counter Cnt2 or read Cnt2 [m 3 ] or [kg]
C3.2.4 float 2
41004 1004
preset counter 1 preset counter 1 preset counter 1 preset counter 1 [m 3 ] or [kg]
C3.1.2 float 2
41006 1006
preset counter 2 preset counter 2 preset counter 2 preset counter 2 [m 3 ] or [kg]
C3.2.2 float 2