Modbus protocol – KROHNE MFC 400 Modbus User Manual
Page 16
5
MODBUS PROTOCOL
16
MFC 400
www.krohne.com
05/2013 - 4002525102 - AD Modbus MFC 400 R02 en
5.8.3 Measurement values
5.8.4 Measurement Status compliant with NAMUR NE 107
Modbus Function Codes "Read Input Registers" (0x04)
Input
Register
Name
Type
No. of
registers
Units
Display
Fct. No.
30000
30000
30000
30000
(0x7530)
Flow Velocity
Float
2
[m/s]
B2.5
30002
30002
30002
30002
(0x7532)
Volume Flow
Float
2
[m³/s]
B2.4
30004
30004
30004
30004
(0x7534)
Mass Flow
Float
2
[kg/s]
B2.3
30006
30006
30006
30006
(0x7536)
Temperature
Float
2
[K]
B2.7
30008
30008
30008
30008
(0x7538)
Density
Float
2
[kg/m³]
B2.6
30010
30010
30010
30010
(0x753A)
Concentration 1 Value 1
Float
2
[Brix], [% Mass], [Baume 144],
[Baume 145], [% NaOH], [Plato],
[% Volume], [API], [% Alcohol by
mass], [% Alcohol by volume]
-
30012
30012
30012
30012
(0x753C)
Concentration 2 Value1
Float
2
-
30014
30014
30014
30014
(0x753E)
Concentration 1 Flow 1
Float
2
[m³/s] or [kg/s]
-
30016
30016
30016
30016
(0x7540)
Concentration 2 Flow 1
Float
2
-
1 Only available with option "concentration measurement"
Modbus Function Codes "Read Input Registers" (0x04)
Input
Register
Name
Type
No. of
registers
Values
30500
30500
30500
30500
(0x7724)
NE 107 Status of Flow Velocity
Byte
1
Bit 7 = Failure (F)
Bit 6 = reserved
Bit 5 = Out of Specification (S)
Bit 4 = Function Check (C)
Bit 3 = Initial Value
Bit 2 = Maintenance required (M)
Bit 1 = Value is too large and limited
Bit 0 = Value is too small and limited
If none of these bits is set, there is no status
message.
30501
30501
30501
30501
(0x7725)
NE 107 Status of Volume Flow
Byte
1
30502
30502
30502
30502
(0x7726)
NE 107 Status of Mass Flow
Byte
1
30503
30503
30503
30503
(0x7727)
NE 107 Status of Temperature
Byte
1
30504
30504
30504
30504
(0x7728)
NE 107 Status of Density
Byte
1
30505
30505
30505
30505
(0x7729)
NE 107 Status of Conc. 1 value
Byte
1
30506
30506
30506
30506
(0x772A)
NE 107 Status of Conc. 2 value
Byte
1
30507
30507
30507
30507
(0x772B)
NE 107 Status of Conc. 1 flow
Byte
1
30508
30508
30508
30508
(0x772C)
NE 107 Status of Conc. 2 flow
Byte
1