4.3 Structure of data bit
【
Example of address setting
】
When communicating with the slave which has "6" of address.
"6"
→
110b
4.4 Check sum
* An example is shown in ( ).
Address
data
Figure 4.3
Structure of data bit
For all communication frames, the high three bits contain the address and the low five bits contain
data.
The robustness of the communication data is maintained by the specification that all
communication frames have the address information.
D7
D6
D5
D4
D3
D2
D1
D0
D7
D6
D5
D4
D3
D2
D1
D0
Figure 4.4 Example of address setting
Both the command packet and reply packet have a checksum for detecting communication errors.
All data excluding the address in Fram 0, 2, 3 and 4 are totaled, and the low four bits are stored to
1 to 4 bit in Frame 1.
The checksum configuration is shown in Figure 4.5.
1
1
0
Data
Figure 4.5 Structure of checksum
Applications manual
For AME series
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
0
＋
＋
Data4
Frame0
Frame1
Frame2
Frame3
Frame4
Address
Data0
Address
Check
sum
- Address
Data2
Address
Data3
Address
(110b)
(11110b)
(110b)
(0111b)
(110b)
11110b
＋
01000b
00000b
00001b
(110b)
(00000b)
(110b)
(00001b)
Total value
100111b
→
Lower 4 bit
0111b
(01000b)
6
ver1.1E 2020.2.12
