Rw 32-Bit - ABB AquaMaster 3 Manual

AquaMaster 3
Electromagnetic flowmeter

1.3.9 RW 32-Bit

Read/Write access to 32-bit types.
Each AquaMaster 3 RW 32-Bit type requires 2 MODBUS Registers (4 bytes). Consequently, RW 32-Bit
Register addresses are assigned at intervals of 2 and the Request Message must provide Quantity of
Registers in multiples of 2.
32-Bit quantities are arranged in big-endian order.
Read Holding Registers 12003 to 12004
var224 – Totaliser Forward
Request Message
Address
Function
Starting Address Hi
Starting Address Lo
Quantity of Inputs Hi
Quantity of Inputs Lo
CRC
CRC
MODBUS Tables Supplement COI/FET2XX/MOD/TBL-EN
(Hex) Response Message
01 Address
03 Function
2e Byte count
e2 Register Value H Hi
00 Register Value H Lo
02 Register Value L Hi
6d Register Value L Lo
15 CRC
CRC
(Hex) Error Message
01 Function
03 Exception Code
04
00
3d
=4041968
ac
f0
39
91
MODBUS Protocol
(Hex)
83
Exception Code
12