Rw Float - ABB AquaMaster 3 Manual

AquaMaster 3
Electromagnetic flowmeter

1.3.10 RW Float

Read/Write access to float types.
Float values use IEEE-754 format arranged in big-endian order.
Each AquaMaster 3 RW Float type requires 2 MODBUS Registers (4 bytes). Consequently, RW Float
Register addresses are assigned at intervals of 2 and Fn03 (Read Holding Register) Request Messages
must provide Quantity of Registers in multiples of 2.
Read Holding Registers 13005 to 13006
var30 – Insertion probe – profile factor
Request Message
Address
Function
Starting Address Hi
Starting Address Lo
Quantity of Inputs Hi
Quantity of Inputs Lo
CRC
CRC
Each AquaMaster 3 RW Float type requires 2 MODBUS Registers (4 bytes). Consequently, RW Float
Register addresses are assigned at intervals of 2 and Fn16 (Write Multiple Register) Request Messages
must provide Quantity of Registers in multiples of 2 and Byte Count in multiples of 4.
Write Multiple Registers 13009 to 13010
var32 – Probe pipe bore = 10.0000
Request Message
Address
Function
Starting Address Hi
Starting Address Lo
Quantity of Registers Hi
Quantity of Registers Lo
Byte count
Register Value H Hi
Register Value H Lo
Register Value L Hi
Register Value L Lo
CRC
CRC
MODBUS Tables Supplement COI/FET2XX/MOD/TBL-EN
(Hex) Response Message
01 Address
03 Function
32 Byte count
cc Register Value H Hi
00 Register Value H Lo
02 Register Value L Hi
0a Register Value L Lo
8c CRC
CRC
(Hex) Response Message
01 Address
10 Function
32 Starting Address Hi
d0 Starting Address Lo
00 Quantity of Registers Hi
02 Quantity of Registers Lo
04 CRC
41 CRC
20
10.0000
00
00
a6
64
(Hex) Error Message
01 Function
03 Exception Code
04
3f
66
=0.9000000
66
67
7c
72
(Hex) Error Message
01 Function
10 Exception Code
32
d0
00
02
4e
89
MODBUS Protocol
(Hex)
83
Exception Code
(Hex)
90
Exception Code
13