Mitsubishi Electric FR-CC2-N Series Instruction Manual page 125

• 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
Slave address
H05
(8 bits)
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
a. Slave address
(8 bits)
• Normal response (Response message)
a. Slave address
(8 bits)
• Query message setting
Message
a Slave address
b Function
c Subfunction
d Data
• 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
a. Slave
b. Function
address
H10
(8 bits)
(8 bits)
124
5. PARAMETERS
5.7 (N) Communication operation parameters
Function Register address
H06 H04
(8 bits) (8 bits)
b. Function c. Subfunction
H08 H00
(8 bits) (8 bits)
b. Function c. Subfunction
H08 H00
(8 bits) (8 bits)
Set the address to send messages to. Broadcast communication is not possible. (Invalid when "0" is
set.)
Set H08.
Set H0000.
Any 2-byte long data can be set. The setting range is H0000 to HFFFF.
c. Starting d. No. of
address registers
H L H
(8 bits) (8 bits) (8 bits)
Preset data
H32 H00
(8 bits) (8 bits)
H00 H
(8 bits) (8 bits)
H00 H
(8 bits) (8 bits)
Description
e. Byte count
L H
(8 bits)
(8 bits) (8 bits)
CRC check
H72 —
(8 bits) (8 bits)
d. Data CRC check
L L
(8 bits) (8 bits)
d. Data CRC check
L L
(8 bits) (8 bits)
f. Data
...
L
(n × 2 × 8
(8 bits)
bits)
—
(8 bits)
H
(8 bits)
H
(8 bits)
CRC check
L H
(8 bits) (8 bits)