KROHNE OPTISONIC V6 Modbus - Manual (Page 16)

2011-07-19
OPTISONIC_V6_Modbus_6.doc 16/29
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8 MODBUS REGISTER MAPPING
Registers are mapped to specific address ranges according to both data and register type:
Data type Register type Read command(s) Write command(s) Address range
Input Register 4 n.a. 3000..3499
Integer (16 bit)
Holding Register 3 6, 16 3500..3999
Input Register 4 n.a. 5000..5499
Long integer (32 bit)
Holding Register 3 6, 16 5500..5999
Input Register 4 n.a. 6000..6499
Double (64 bit)
Holding Register 3 6, 16 6500..6999
Input Register 4 n.a. 7000..7499
Float (32 bit)
Holding Register 3 6, 16 7500..7999
Input Register 4 n.a. 8000..8499
Long long (64 bit)
Holding Register 3 6, 16 8500..8999
Note: The relative addresses listed in the tables below are addresses relative to the starting address of the designated register group.
8.1 Input Registers (read-only): Integer (16-bit); address range 3000-3499
Parameter / Variable
(short description)
Name Explanation
Relative
address
Absolute
address,
non-
Modicon
Absolute
address,
Modicon-
comp.
Units
Test register TestRegister uint16
Register reserved for testing communications and protocol
handling with this type of register, without affecting the operation
of the flow meter.
0 3000
3000-3001
(2 regs)
-