ABB AquaMaster 3, Руководство пользователя

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AquaMaster 3
Electromagnetic flowmeter
MODBUS Tables Supplement COI/FET2XX/MOD/TBL-EN 3
MODBUS Protocol
1.2 AquaMaster 3 MODBUS Register Mapping
The AquaMaster 3 MODBUS interface provides access to AquaMaster 3 parameters described in the
AquaMaster 3 Programming Guide (part no. COI/AQUAMASTER3-EN).
In general, AquaMaster 3 parameters with security access levels 0 to 7 can be read via MODBUS and,
where defined, parameters with security access levels 0 to 4 can be written via MODBUS.
Writeable parameters identified as MID parameters (see Appendix A) become Read Only via MODBUS if
the AquaMaster 3 flow meter has been configured for use as an MID instrument – refer to the
AquaMaster 3 Programming Guide (COI/AQUAMASTER3-EN) for details. Attempting to write to MID
parameters in an MID instrument results in MODBUS exception code 04, Slave Device Failure.
Table 2.1 shows the mapping of AquaMaster 3 MODBUS Registers to MODBUS Function Codes and
AquaMaster 3 data types, section 1.3 provides details of usage for each Register Address Range and
Appendix A provides the Register allocation tables.
Register
Address
Range Applicable Function
Codes AquaMaster
Data Type Description
0001 .. 0500 01 Read Coils
05 Write Single Coil
15 Write Multiple Coils RW 1-Bit Read/write access to single bit types.
0501 .. 1000 02 Read Discrete Inputs RO 1-Bit Read only access to single bit types.
1001 .. 2000 04 Read Input Registers RO 8/16-Bit Read only access to 8- and 16-bit types.
2001 .. 4000 04 Read Input Registers RO String Read only access to string types.
4001 .. 5000 04 Read Input Registers RO 32-Bit Read only access to 32-bit types.
5001 .. 7000 04 Read Input Registers RO Float Read only access to float types.
8001 .. 10000 03 Read Holding Registers
06 Write Single Register
16 Write Multiple Registers RW 8/16-Bit Read/write access to 8- and 16-bit types.
10001 .. 12000 03 Read Holding Registers
16 Write Multiple Registers RW String Read/write access to string types.
12001 .. 13000 03 Read Holding Registers
16 Write Multiple Registers RW 32-Bit Read/write access to 32-bit types.
13001 .. 14000 03 Read Holding Registers
16 Write Multiple Registers RW Float Read/write access to float types.
Table 2.1 AquaMaster 3 MODBUS Register Mapping