Mitsubishi Electric FR-A820-00046 Instruction Manual page 864

(N) Operation via communication and its settings
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
³ Slave address
(8 bits)
● Normal response (Response message)
³ Slave address
(8 bits)
● Query message setting
Message
³ Slave address
· Function
» Subfunction
¿ Data
Tab. 5-293: Description of the query message
● Content of normal response
With a normal response, the content is the same as ³ to ¿ (including the CRC check) 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.
5 - 662
· Function » Subfunction
H08 H00
(8 bits) (8 bits)
· Function » Subfunction
H08 H00
(8 bits) (8 bits)
Description
Set the address to send messages to. Broadcast communication is not possible.
(Invalid when "0" is set.)
Set H08.
Set H0000.
Any data 2 bytes long can be set. Setting range is H0000 to HFFFF.
¿ Data
H00 H
(8 bits) (8 bits) (8 bits)
¿ Data
H00 H
(8 bits) (8 bits) (8 bits)
Parameters
CRC check
L L H
(8 bits) (8 bits)
CRC check
L L H
(8 bits) (8 bits)