參數(shù)資料
型號(hào)： TMC428
廠商： Electronic Theatre Controls, Inc.
英文描述： Intelligent Triple Stepper Motor Controller with Serial Peripheral Interfaces
中文描述： 三步進(jìn)電機(jī)智能控制器的串行外圍接口
文件頁(yè)數(shù)： 36/50頁(yè)
文件大?。?/td> 378K
代理商： TMC428
TMC428 DATA SHEET (V. 1.00 / February 12, 2001)
36
Copyright 2000, TRINAMIC Microchips GmbH
M I C R O C H I P S
36
The last five values (which are calculated to be 64) have to be replaced by 63. With this replacement one
finally gets
y(i) = { 0, 2, 3, 5, 6, 8, 9, 11, 12, 14, 16, 17, 19, 20, 22, 23, 24, 26, 27, 29, 30, 32, 33, 34, 36,
37, 38, 39, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 56, 57, 58, 59, 59, 60, 60, 61,
61, 62, 62, 62, 63, 63, 63,
63
,
63
,
63
,
63
,
63
}
. These 64 values– representing a quarter sine period in the
interval [ 0 ...
π
/4 [ which is expanded automatically by the TMC428 to a full sine cosine period –have to
be send to the on-chip RAM of the TMC428 by 32 datagrams:
% binary representation of the datagram : decimal represented pair of values : $ hexadecimal
(separated by & character) representation
% 11 00000 0 00000000 00
000010
00
000000
:
2
&
0
:
$ C0 00 02 00
% 11 00001 0 00000000 00
000101
00
000011
:
5
&
3
:
$ C2 00 05 03
% 11 00010 0 00000000 00
001000
00
000110
:
8
&
6
:
$ C4 00 08 06
% 11 00011 0 00000000 00
001011
00
001001
:
11
&
9
:
$ C6 00 0B 09
% 11 00100 0 00000000 00
001110
00
001100
:
14
&
12
:
$ C8 00 0E 0C
% 11 00101 0 00000000 00
010001
00
010000
:
17
&
16
:
$ CA 00 11 10
% 11 00110 0 00000000 00
010100
00
010011
:
20
&
19
:
$ CC 00 14 13
% 11 00111 0 00000000 00
010111
00
010110
:
23
&
22
:
$ CE 00 17 16
% 11 01000 0 00000000 00
011010
00
011000
:
26
&
24
:
$ D0 00 1A 18
% 11 01001 0 00000000 00
011101
00
011011
:
29
&
27
:
$ D2 00 1D 1B
% 11 01010 0 00000000 00
100000
00
011110
:
32
&
30
:
$ D4 00 20 1E
% 11 01011 0 00000000 00
100010
00
100001
:
34
&
33
:
$ D6 00 22 21
% 11 01100 0 00000000 00
100101
00
100100
:
37
&
36
:
$ D8 00 25 24
% 11 01101 0 00000000 00
100111
00
100110
:
39
&
38
:
$ DA 00 27 26
% 11 01110 0 00000000 00
101010
00
101001
:
42
&
41
:
$ DC 00 2A 29
% 11 01111 0 00000000 00
101100
00
101011
:
44
&
43
:
$ DE 00 1C 1B
% 11 10000 0 00000000 00
101110
00
101101
:
46
&
45
:
$ E0 00 2E 2D
% 11 10001 0 00000000 00
110000
00
101111
:
48
&
47
:
$ E2 00 30 2F
% 11 10010 0 00000000 00
110010
00
110001
:
50
&
49
:
$ E4 00 32 31
% 11 10011 0 00000000 00
110100
00
110011
:
52
&
51
:
$ E6 00 34 33
% 11 10100 0 00000000 00
110110
00
110101
:
54
&
53
:
$ E8 00 36 35
% 11 10101 0 00000000 00
111000
00
110111
:
56
&
55
:
$ EA 00 38 37
% 11 10110 0 00000000 00
111001
00
111000
:
57
&
56
:
$ EC 00 39 38
% 11 10111 0 00000000 00
111011
00
111010
:
59
&
58
:
$ EE 00 3B 3A
% 11 11000 0 00000000 00
111100
00
111011
:
60
&
59
:
$ F0 00 3C 3B
% 11 11001 0 00000000 00
111101
00
111100
:
61
&
60
:
$ F2 00 3D 3C
% 11 11010 0 00000000 00
111110
00
111101
:
62
&
61
:
$ F4 00 3E 3D
% 11 11011 0 00000000 00
111110
00
111110
:
62
&
62
:
$ F6 00 3E 3E
% 11 11100 0 00000000 00
111111
00
111111
:
63
&
63
:
$ F8 00 3F 3F
% 11 11101 0 00000000 00
111111
00
111111
:
63
&
63
:
$ FA 00 3F 3F
% 11 11110 0 00000000 00
111111
00
111111
:
63
&
63
:
$ FC 00 3F 3F
% 11 11111 0 00000000 00
111111
00
111111
:
63
&
63
:
$ FE 00 3F 3F
Table 19 - Datagrams for Initialization of a Quarter Sine Wave Period Micro Step Look-Up-Table
These 32 datagrams (Table 19) are sufficient for all programmable micro step resolutions. If micro stepping
is proposed for at least one stepper motor, these 32 datagrams have to be send once to the TMC428 for
initialization of the micro step table after power-on reset. The initialization of the micro step look-up-table
is not necessary, if full stepping is used for
all
stepper motors. The On-Chip RAM is not initialized during
power-on reset. So, the full initialization of the whole micro step look-up-table is recommended to avoid
trouble caused by missing look-up table entries. Additionally, a fully initialized micro step look-up-table
allows the selection of individual micro step resolutions for different stepper motors.
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