Mitsubishi Electric FR-A700 Technical Manual page 429

• Description of normal response
Message
5)Byte Count
6) Data
[Example] To read the register values of 41004 ([Pr. 4]) to 41006 ([Pr. 6]) from the slave address 17 (H11).
Query message
Slave Address Function
H11 H03
(8bit) (8bit)
Normal response (Response message)
Slave
Function
Address
H11 H03
(8bit) (8bit)
Read value
Register 41004 ([Pr. 4]): H1770 (60.00Hz)
Register 41005 ([Pr. 5]): H0BB8 (30.00Hz)
Register 41006 ([Pr. 6]): H03E8 (10.00Hz)
Write holding register data (H06 or 06)
Can write the description of 1) system
environment variables and 4) inverter parameters
assigned to the holding register area (refer to the
register list (page 468)).
Query message
1) Slave
2) Function
Address
H06
(8bit)
(8bit)
Normal response (Response message)
1) Slave
2) Function
Address
H06
(8bit)
(8bit)
•Query message setting
Message
Set the address to which a message will be sent. Setting of address 0 enables broadcast
1) Slave address
communication.
2) Function Set H06.
Set the address of the holding register to which data will be written.
3) Register Address Register address = Holding register address (decimal) - 40001
For example, setting of register address 0001 writes data to the holding register address 40002.
4) Preset Data Set the data that will be written to the holding register. The written data is always 2 bytes.
• Description of normal response
1) to 4) (including CRC check) of the normal
response are the same as those of the query
message. For broadcast communication, no
[Example] To write 60Hz (H1770) to 40014 (running frequency RAM) at slave address 5 (H05).
Query message
Slave Address Function
H05 H06
(8bit) (8bit)
Normal response (Response message)
Same data as the query message
The setting range is H02 to H14 (2 to 20).
Twice greater than the No. of Point specified at 4) is set.
The number of data specified at 4) is set. Data are read in order of Hi byte and Lo byte, and set in
order of starting address data, starting address + 1 data, starting address + 2 data, ...
Starting Address
H03 HEB
(8bit) (8bit)
Byte Count
H06 H17 H70
(8bit) (8bit) (8bit)
3) Register
Address
H L
(8bit) (8bit)
3) Register
Address
H L
(8bit) (8bit)
Register Address
H00
(8bit)
463
Setting Description
No. of Points
H00 H03
(8bit) (8bit)
Data
H0B HB8 H03
(8bit) (8bit) (8bit)
4) Preset Data CRC Check
H L L
(8bit) (8bit) (8bit)
4) Preset Data CRC Check
H L L
(8bit) (8bit) (8bit)
Setting Description
response is returned in reply to a query.
Therefore, the next query must be made when
the inverter processing time has elapsed after
the previous query.
Preset Data
H0D H17
(8bit) (8bit)
PARAMETER
CRC Check
H77 H2B
(8bit) (8bit)
CRC Check
HE8 H2C HE6
(8bit) (8bit) (8bit)
H
(8bit)
H
(8bit)
CRC Check
H70 H17 H99
(8bit) (8bit) (8bit)
2