Mitsubishi Electric fr-e700 series, Instruction Manual

Page: 426 / 608

Communication operation and setting Parameter
6 - 272
●
Function diagnosis (H08 or 08)
A communication check can be made since the query message sent is returned unchanged as a
response message (function of subfunction code H00). Subfunction code H00 (Return Query
Data).
Query message
Normal response (Response message)
The normal response data
���
to
���
(including CRC check) of the normal response are the same as those
of the query message.
���
Slave
Address
���
Function
���
Subfunction
���
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)
���
Slave
Address
���
Function
���
Subfunction
���
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
���
Slave Address
Set the address to which the message will be sent. Broadcast communication
cannot be made (0 is invalid)
���
Function Set H08.
���
Subfunction Set H0000.
���
Data
Any data can be set if it is 2 bytes long.
The setting range is H0000 to HFFFF.
Tab. 6-93: Description of the query message