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)： 28/50頁(yè)
文件大?。?/td> 378K
代理商： TMC428
TMC428 DATA SHEET (V. 1.00 / February 12, 2001)
28
Copyright 2000, TRINAMIC Microchips GmbH
M I C R O C H I P S
28
R
R
R
SCK_S
SDO_S
SDI_S
nSCS_S
REF2
REF3
REF1
TEST
GND
SDI_C
nSCS_C
SCK_C
SDO_C
CLK
V5
V33
TMC428
+VCC
+VCC
+VCC
Figure 13 - Left-Side-Only Reference Switch Configuration for mot1r=0 (and refmux=0)
If
continuous_update
is ‘1’, internal status bits are updated periodically also if all stepper motors are at
rest. Additionally, the chip select signal
nSCS_S
for the stepper motor driver chain is also the control signal
for a multiplexer in case of using the reference switch multiplexing option (see Figure 11). So, the
continuous_update
must be set to ‘1’ if automatic stop by reference switches is enabled, if six
multiplexed reference switches are used, and to get the states of reference switches while all stepper
motors are at rest.
The bit named
refmux
must be set to ‘1’ to enable reference switch multiplexing (see Figure 11). If
reference switch multiplexing is enabled, and the
mot1r
is ignored. The default value after power-on reset
of
refmux
is ‘0’. If
refmux
is ‘0’, the association of the reference switch inputs REF1, REF2, REF3 depends
on the setting of the configuration bit
mot1r
. The power-on default value of
mot1r
is ‘0’. With that
default value,
REF1
is associated to the left reference switch of stepper motor #1,
REF2
is associated to
the left reference switch of stepper motor #2, and
REF3
is associated to the left reference switch of
stepper motor #3.
If
mot1r
is set to ‘1’ the input
REF1
is also associated to the left reference switch of stepper motor #1.
REF2
is also associated to the left reference switch of stepper motor #2. But, the input
REF3
is associated
to the
right reference switch
of stepper
motor #1
and no reference switch input is associated to stepper
motor number#3 (see Figure 12).
After power-on-reset, per default
refmux=0
and
mot1r=0
selects the single reference switch
configuration outlined in Figure 13, where each reference switch input (
REF1
,
REF2
,
REF3
) is assigned
individually to one each stepper motor as the left reference switch.
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