Omron SYSDRIVE 3G3MV - Page 208

7-14
D Response
Normal
Byte No. Data
1 Slave address
2 Function code (03 Hex)
3 No. of bytes of attached data
4
Data of start register
MS B
5
D
a
t
a
o
f
s
t
a
r
t
r
e
g
i
s
t
e
r
LSB
6
Data of next register
MSB
7
D
a
t
a
o
f
n
e
x
t
r
e
g
i
s
t
e
r
LSB
8
Data of next register
MSB
9
D
a
t
a
o
f
n
e
x
t
r
e
g
i
s
t
e
r
LSB
: : :
n--1
CRC-16 check
n
C
R
C
-
1
6
c
h
e
c
k
Error
Byte No. Data
1 Slave address
2 Function code (83 Hex)
3 Error code
4
CRC-16 check
5
C
R
C
-
1
6
c
h
e
c
k
Note When an error occurs, the MSB of the function code will be set to 1.
H Example of Data Read
·In the following example, four-register data (status signal data) is read from register
0020 Hex of the Inverter with a Slave address of 02.
Communications Chapter 7