Mitsubishi Electric FR-A820-00046 Instruction Manual page 992

Ethernet communication (FR-A800-E)
Example Read the register values of 41004 (Pr. 4) to 41006 (Pr. 6) from slave address 17 (H11).
Query message
Transaction
identifier
A given value is set.
Normal response (Response message)
Transaction
identifier
The values are the same as those in the query message.
Read value
Register 41004 (Pr. 4): H1770 (60.00 Hz)
Register 41005 (Pr. 5): H0BB8 (30.00 Hz)
Register 41006 (Pr. 6): H03E8 (10.00 Hz)
5 - 790
Protocol
Length field
Identifier
H00 H00 H00
(8 bits) (8 bits) (8 bits)
Protocol
Length field
Identifier
H00 H00 H00 H09
(8 bits) (8 bits) (8 bits) (8 bits)
Func-
Unit identifier
tion
H06 H11 H03
(8 bits) (8 bits) (8 bits)
Unit
Func- Byte
identi-
tion count
fier
H11 H03 H06 H17
(8 bits) (8 bits) (8 bits) (8 bits)
Parameters
Starting address No. of points
H03 HEB H00
(8 bits) (8 bits) (8 bits)
Data
H70 H0B HB8 H03
(8 bits) (8 bits) (8 bits) (8 bits)
H03
(8 bits)
HE8
(8 bits)