Thermo Scientific Oretronic III, Руководство по эксплуатации и обслуживанию

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A-2 Thermo Fisher Scientific
REC-4105 Rev L
(Illegal Data Address). This is a sub-set of normal Modbus slave
responses.
Broadcast messages are not supported in this implementation.
Following are examples of Modbus query messages and their responses.
In this example, the host reads holding registers 40003–4005 from slave
device 5.
QUERY RESPONSE
Field Name Contents (Hex) Field Name Contents (Hex)
Slave Address 05 Slave Address 05
Function 03 Function 03
Starting Address Hi 00 Byte Count 06
Starting Address Lo 02 Data Hi (Reg. 40003) 02
No. of Registers Hi 00 Data Lo (Reg. 40003) 2B
No. of Registers Lo 03 Data Hi (Reg. 40004) 00
Error Check (16-bit CRC) Data Lo (Reg. 40004) 00
Data Hi (Reg. 40005) 00
Data Lo (Reg. 40005) 64
Error Check (16-bit CRC)
In this example, the host writes new data (00 0A and 01 02 hex) to
holding registers 40002–40003 in slave device 7.
QUERY RESPONSE
Field Name Contents (Hex) Field Name Contents (Hex)
Slave Address 07 Slave Address 07
Function 10 Function 10
Starting Address Hi 00 Starting Address Hi 00
Starting Address Lo 01 Starting Address Lo 01
No. of Registers Hi 00 No. of Registers Hi 00
No. of Registers Lo 02 No. of Registers Lo 02
Byte Count 04 Error Check (16-bit CRC)
Data Hi 00
Data Lo 0A
Data Hi 01
Data Lo 02
Error Check (16-bit CRC)
Example: Read
Holding Registers
Example: Preset
Multiple Registers