Delta ASD-A2 Series User Manual page 554

Chapter 9 Communications
Example 1: function code 03H, access multiple words:
The Master issues the command to the 1
the start address 0200H. In response message from the Slave, the content of starting address
0200H is 00B1H and the content of the 2
data in one single access is 10. The calculation of LRC and CRC will be described in next chapter.
ASCII Mode:
Command message (Master):
Start
Slave Address
Function
Starting data
address
Number of data
(In Word)
LRC Check
End 1
End 0
Revision February, 2017
st
Slave and reads the continuous 2 words starting from
nd
data address 0201H is 1F40H. The maximum allowable
':'
'0'
'1'
'0'
'3'
'0'
'2'
'0'
'0'
'0'
'0'
'0'
'2'
'F'
'8'
(0DH)(CR)
(0AH)(LF)
Response message (Slave):
Start
Slave Address
Function
Number of data
(In Byte)
Content of
starting data
address 0200H
Content of
second data
address 0201H
LRC Check
End 1
End 0
ASDA-A2
':'
'0'
'1'
'0'
'3'
'0'
'4'
'0'
'0'
'B'
'1'
'1'
'F'
'4'
'0'
'E'
'8'
(0DH)(CR)
(0AH)(LF)
9-9