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參數(shù)資料
| 型號： | 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 |
| 文件頁數(shù)： | 21/50頁 |
| 文件大?。?/td> | 378K |
| 代理商： | TMC428 |
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TMC428 DATA SHEET (V. 1.00 / February 12, 2001)
21
Copyright 2000, TRINAMIC Microchips GmbH
M I C R O C H I P S
21
The bits contained in
ref_conf
control the semantic and the actions of the reference/stop switch modes
concerning interrupt generation as explained later. A stepper motor stops if the reference/stop switch,
which corresponds to the actual driving direction, becomes active. The configuration bits named
DISABLE_STOP_L
respectively
DISABLE_STOP_R
disable these automatic stop functions. If the bit
SOFT_STOP
is set, motor stop forced by a reference switch is done within motion parameter limits while
otherwise stopping is abruptly.
The bit
REF_RnL
(reference switch Right not Left) defines which switch is the reference switch: If set to
‘1’, the right, else (set to ‘0’) the left one is the reference switch. Note: Definition of the reference switch
by the configuration bit
REF_RnL
has no effect concerning stopping using reference switches as stop
switches if
DISABLE_STOP_L=’0’
respectively
DISABLE_STOP_R=’0’
.
32 bit DATAGRAM send from a μC to the TMC428
3
1
3
0
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1
9
1
8
1
7
1
6
1
5
1
4
1
3
1
2
1
1
1
0
9 8
7 6 5 4 3 2
1 0
R
ADDRESS
R
DATA
smda
1 0 1 0
lp
ref_conf
rm
0
l
R
S
D
D
0
Table 8 - lp & ref_conf & ramp_mode (rm)
A reference switch indicates a reference position within a given tolerance. The tolerance can be
programmed in units of steps respectively micro steps. When a reference switch is reached, the actual
position can be stored automatically. The read-only status bit
lp
(latch position waiting) indicates the
status of this automatic storage of the current position triggered by a reference switch tagged event.
interrupt_mask & interrupt_flags (IDX=%1011)
The TMC428 provides one interrupt register of eight flags for each stepper motor. Each interrupt bit can
be disabled individually. The interrupt status
nINT
is low active. So, if an interrupt condition of one stepper
motor becomes active,
nINT
is set to low (‘0’) and it remains low until all interrupt bits– selected by
interrupt masks –of all stepper motors become inactive. If the interrupt status is inactive,
nINT
is high
(‘1’). The interrupt status is mapped to the most significant bit (31) of each datagram send back to the μC
(see page 10) and it is available at the
SDO_C
pin of the TMC428 if the pin
nSCS_C
is low.
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