Mitsubishi Electric 800 Series Instruction Manual page 74

• Query message setting
Message
a Slave Address
b Function
c Starting Address
d No. of Points
e Byte Count
f Data
• Content of normal response
With a normal response, the content is the same as a to d (including the CRC check) query messages.
Example) Write 0.5 s (H05) to 41007 (Pr.7) and 1 s (H0A) to 41008 (Pr.8) of slave address 25 (H19).
Query message
Slave
Function
Address
H19 H10 H03
(8 bits) (8 bits) (8 bits)
Normal response (Response message)
Slave Address Function
H19 H10
(8 bits) (8 bits)
Set the address to send messages to. Setting "0" enables broadcast communication.
Set H10.
Set the address from which to start writing of data to the holding register.
Start address = start register address (decimal) - 40001
For example, when start register address 0001 is set, the data of holding register address 40002
is read.
Set the number of holding registers to write to. Data can be written to up to 125 registers.
The setting range is H02 to HFA (2 to 250).
Set twice the value specified by d.
Set the amount of data specified by d. Set write data Hi bytes first followed by Lo bytes, and
arrange it as follows: data of start address, data of start address+1, data of start address+2, and
so forth.
Starting
No. of Points
Address
HEE H00 H02
(8 bits) (8 bits) (8 bits)
Starting Address
H03 HEE
(8 bits) (8 bits)
Description
Byte
Data
Count
H04 H00 H05
(8 bits) (8 bits) (8 bits)
No. of Points
H00 H02 H22
(8 bits) (8 bits) (8 bits)
CRC Check
H00 H0A H86
(8 bits) (8 bits) (8 bits)
CRC Check
H61
(8 bits)
PARAMETER
H3D
(8 bits)
4
73