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5-42
5.3.3.3 CRC-16
calculation example
The following is an example of read data that is sent:
Station number: 1, FC = 03, function code P49 (P = code 03, 49 = 31 Hex), read data size: 20 items,
G.P (generating polynomial): 1010 0000 0000 0001.
Address
FC
Function code
Read data size
01 03 03 31 00 14
N
PROCESS
15 14
13
12
11
10
9
8
7
6
5
4 3 2 1 0
Flag
1 Initial
data
R="FFFF"
1 1
1
1
1
1
1
1
1
1
1
1 1 1 1 1
2
1st data byte
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
3
CRC = No.1 X or No.2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
4
Shift >> 2 (up to flag=1)
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
5
CRC = No.4 X or G.P
1
0
0
1
1
1
1
1
1
1
1
1
1
1
1
0
6 Shift
>>
2
0 0
1
0
0
1
1
1
1
1
1
1 1 1 1 1
1
7
CRC = No.6 X or G.P
1
0
0
0
0
1
1
1
1
1
1
1
1
1
1
0
8 Shift
>>
2
0 0
1
0
0
0
0
1
1
1
1
1 1 1 1 1
1
9
CRC = No.8 X or G.P
1
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
10 Shift >> 2 (8 shift end)
0
0
1
0
0
0
0
0
0
1
1
1
1
1
1
1
1
11 CRC = No.10 X or G.P
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
0
12 2nd data byte
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
13 CRC = No.11 X or No.12
1
0
0
0
0
0
0
0
0
1
1
1
1
1
0
1
14 Shift
>>
1
0 1
0
0
0
0
0
0
0
0
1
1 1 1 1 0
1
15 CRC = No.14 X or G.P
1
1
1
0
0
0
0
0
0
0
1
1
1
1
1
1
16 Shift
>>
1
0 1
1
1
0
0
0
0
0
0
0
1 1 1 1 1
1
17 CRC = No.16 X or G.P
1
1
0
1
0
0
0
0
0
0
0
1
1
1
1
0
18 Shift
>>
2
0 0
1
1
0
1
0
0
0
0
0
0 0 1 1 1
1
19 CRC = No.18 X or G.P
1
0
0
1
0
1
0
0
0
0
0
0
0
1
1
0
20 Shift
>>
2
0 0
1
0
0
1
0
1
0
0
0
0 0 0 0 1
1
21 CRC = No.20 X or G.P
1
0
0
0
0
1
0
1
0
0
0
0
0
0
0
0
22 Shift >> 2 (8 shift end)
0
0
1
0
0
0
0
1
0
1
0
0
0
0
0
0
0
23 3rd data byte
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
24 CRC = No.22 X or No.23
0
0
1
0
0
0
0
1
0
1
0
0
0
0
1
1
25 Shift
>>
1
0 0
0
1
0
0
0
0
1
0
1
0 0 0 0 1
1
26 CRC = No.25 X or G.P
1
0
1
1
0
0
0
0
1
0
1
0
0
0
0
0
27 Shift
>>
6
0 0
0
0
0
0
1
0
1
1
0
0 0 0 1 0
1
28 CRC = No.27 X or G.P
1
0
1
0
0
0
1
0
1
1
0
0
0
0
1
1
29 Shift
>>
1
0 1
0
1
0
0
0
1
0
1
1
0 0 0 0 1
1
30 CRC = No.29 X or G.P
1
1
1
1
0
0
0
1
0
1
1
0
0
0
0
0
31 4th data byte
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
1
32 CRC = No.30 X or No.31
1
1
1
1
0
0
0
1
0
1
0
1
0
0
0
1
33 Shift
>>
1
0 1
1
1
1
0
0
0
1
0
1
0 1 0 0 0
1
34 CRC = No.33 X or G.P
1
1
0
1
1
0
0
0
1
0
1
0
1
0
0
1
Содержание FRENIC-VG Series
Страница 1: ...For the STACK type User s Manual User s Manual Option Edition 24A7 E 0045 3 ...
Страница 2: ......
Страница 3: ...High Performance Vector Control Inverter User s Manual Option Edition ...
Страница 155: ...6 5 SX Bus Interface Card 6 79 Chap 6 CONTROL OPTIONS Figure 6 5 5 ...
Страница 156: ...6 80 Basic Connection Diagram Figure 6 5 6 ...
Страница 203: ...6 6 High Speed Serial Communication Capable Terminal Block 6 127 Chap 6 CONTROL OPTIONS Figure 6 6 3 ...
Страница 234: ...6 158 6 7 3 External dimension drawing 17 Unit mm Figure 6 7 5 Option PCB Outline Drawing Tightening torque 0 4 N m ...
Страница 344: ......
Страница 346: ...For the STACK type User s Manual User s Manual Option Edition 24A7 E 0045 3 ...