ABB AquaMaster 3, Руководство пользователя

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AquaMaster 3
Electromagnetic flowmeter
MODBUS Tables Supplement COI/FET2XX/MOD/TBL-EN 12
MODBUS Protocol
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 (Hex) Response Message (Hex) Error Message (Hex)
Address 01 Address 01 Function 83
Function 03 Function 03 Exception Code Exception Code
Starting Address Hi 2e Byte count 04
Starting Address Lo e2 Register Value H Hi 00
Quantity of Inputs Hi 00 Register Value H Lo 3d
Quantity of Inputs Lo 02 Register Value L Hi ac
CRC 6d Register Value L Lo f0
=4041968
CRC 15 CRC 39
CRC 91