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5. PARAMETERS
5.7 (N) Communication operation parameters
• Content of normal response
The contents in the normal response (
a to d
, including the CRC check) are the same as those in the query messages.
In the case of broadcast communication, no response is returned.
Example) Write 114 (H0072) to 41075 (Pr.75) of slave address 5 (H05).
Query message
Normal response (Response message)
The same data as those in the query message
NOTE
• With broadcast communication, no response is generated even if a query is executed, so when the next query is made, it must
be made after waiting for the inverter data processing time after the previous query is executed.
Diagnostics (diagnosis of functions) (H08 or 08)
• A communication check can be made since the query message 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)
• Query message
• Normal response (Response message)
• Query message setting
• Content of normal response
The contents in the normal response (
a to d
, including the CRC check) are the same as those in the query messages.
NOTE
• With broadcast communication, no response is generated even if a query is executed, so when the next query is made, it must
be made after waiting for the inverter data processing time after the previous query is executed.
Preset multiple registers (writing data to multiple holding registers) (H10
or 16)
• Data can be written to multiple holding registers.
• Query message
Slave address
Function
Register address
Preset data
CRC check
H05
(8 bits)
H06
(8 bits)
H04
(8 bits)
H32
(8 bits)
H00
(8 bits)
H72
(8 bits)
—
(8 bits)
—
(8 bits)
a. Slave address
b. Function
c. Subfunction
d. Data
CRC check
(8 bits)
H08
(8 bits)
H00
(8 bits)
H00
(8 bits)
H
(8 bits)
L
(8 bits)
L
(8 bits)
H
(8 bits)
a. Slave address
b. Function
c. Subfunction
d. Data
CRC check
(8 bits)
H08
(8 bits)
H00
(8 bits)
H00
(8 bits)
H
(8 bits)
L
(8 bits)
L
(8 bits)
H
(8 bits)
Message
Description
a
Slave address
Set the address to send messages to. Broadcast communication is not possible. (Invalid when "0" is
set.)
b
Function
Set H08.
c
Subfunction
Set H0000.
d
Data
Any 2-byte long data can be set. The setting range is H0000 to HFFFF.
a. Slave
address
b. Function
c. Starting
address
d. No. of
registers
e. Byte count
f. Data
CRC check
(8 bits)
H10
(8 bits)
H
(8 bits)
L
(8 bits)
H
(8 bits)
L
(8 bits)
(8 bits)
H
(8 bits)
L
(8 bits)
...
(n × 2 × 8
bits)
L
(8 bits)
H
(8 bits)
