Function Code List - Mitsubishi Electric A800-E Instruction Manual

Function code list
Function name Read/write
Read holding register Read
Preset single register Write
Diagnostics Read
Preset multiple registers Write
Read holding register
Read
access log
(N) Operation via communication and its settings
Code
The data of the holding registers is read.
The various data of the inverter can be read from MODBUS
registers.
System environmental variable (Refer to
H03 Real time monitor (Refer to the Instruction Manual (Detailed) of
the FR-A800/FR-F800 inverter.)
Faults history (Refer to
Model information monitor (Refer to
Inverter parameters (Refer to
Data is written to a holding register.
Data can be written to MODBUS registers to output instructions
H06 to the inverter or set parameters.
System environmental variable (Refer to
Inverter parameters (Refer to
Functions are diagnosed. (communication check only)
A communication check can be made since the query message
H08 is sent and the query message is returned as it is as the return
message (subfunction code H00 function).
Subfunction code H00 (Return query data)
Data is written to multiple consecutive holding registers.
Data can be written to consecutive multiple MODBUS registers
H10 to output instructions to the inverter or set parameters.
System environmental variable (Refer to
Inverter parameters (Refer to
The number of registers that were successfully accessed by the
previous communication is read.
Queries by function codes H03 and H10 are supported.
The number and start address of holding registers successfully
H46
accessed by the previous communication are returned.
"0" is returned for both the number and start address for queries
other than function code H03 and H10.
When the connection is closed, the data in the log is cleared.
Outline
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page 50.)
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page 49.)
PARAMETER
Message
format
Refer to
page
page 42
page 43
page 44
page 45
page 46
2
GROUP
N
41