Omron SYSDRIVE 3G3MV - Page 211

7-17
D Response
Normal
Byte No. Data
1 Slave address
2 Function code (10 Hex)
3
Register No. of write start data
MS B
4
R
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N
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LSB
5
No. of registers of write data
MSB
6
N
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LSB
7
CRC-16 check
8
C
R
C
-
1
6
c
h
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k
Error
Byte No. Data
1 Slave address
2 Function code (90 Hex)
3 Error code
4
CRC-16 check
5
C
R
C
-
1
6
c
h
e
c
k
Note 1. When an error occurs, the MSB of the function code will be set to 1.
Note 2. A broadcast message uses the same DSR message format. The Slave
address is, however, always set to 00 and only register 0001 Hex (the RUN
command) and register number 0002 Hex (the frequency reference) can be
written.
H Example of Data Read
·Inthefollowingexample,two-registerdata(theRUNcommand)iswrittenfromregister
0002 Hex of the Inverter with a Slave address of 01.
D DSR Message
Byte No. Data Data
example
(Hex)
1 Slave address 01
2 Function code 10
3
Register No. of write start data
00
4
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01
5
No. of registers of write data
00
6
N
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02
Communications Chapter 7