KROHNE GFC 300 Modbus - Manual (Page 15)

MODBUS PROTOCOL
6
15
GFC 300
www.krohne.com 03/2012 - 7312402100 - AD Modbus GFC 300 R01 en
6.8.1 Counter parameters
INFORMATION!
Counter 3 parameters are only available for converter with IO 2.
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 Measurement Cnt1 Measurement Cnt1 Measurement Cnt1 Measurement Cnt1
20 = volume flow
21 = corr. volume (gas only)
21 = enthalpy flow (steam only)
22 = mass flow
C3.1.2 word 1
40002 2 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
40003 3 Measurement Cnt2 Measurement Cnt2 Measurement Cnt2 Measurement Cnt2
20 = volume flow
21 = corr. volume flow (gas only)
21 = enthalpy flow (steam only)
22 = mass flow
C3.2.2 word 1
40004 4 Counter 3 function Counter 3 function Counter 3 function Counter 3 function
1 = sum counter
2 = + counter
3 = - counter
0 = off
C3.3.1 byte 1
40005 5 Measurement Cnt3 Measurement Cnt3 Measurement Cnt3 Measurement Cnt3
20 = Volume flow
21 = corr. volume flow (gas only)
21 = enthalpy flow (steam only)
22 = mass flow
C3.3.2 word 1
41000 1000 Low flow cutoff value Cnt1 C3.1.3 float 2
41002 1002 Time constant Cnt1 C3.1.4 float 2
41004 1004 Set counter Cnt1 or read Cnt1 C3.1.7 float 2
41006 1006 Low flow cutoff value Cnt2 C3.2.3 float 2
41008 1008 Time constant Cnt2 C3.2.4 float 2
41010 1010 Set counter Cnt2 or read Cnt2 C3.2.7 float 2
41012 1012 Low flow cutoff value Cnt3 C3.3.3 float 2
41014 1014 Time constant Cnt3 C3.3.4 float 2
41016 1016 Set counter Cnt3 or read Cnt3 C3.3.7 float 2
41018 1018 Preset counter 1 C3.1.5 float 2
41020 1020 Preset counter 2 C3.2.5 float 2
41022 1022 Preset counter 3 C3.3.5 float 2