NOVA electronics Inc. MCX514 -
145
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145
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3.10
Multichip Interpolation
This is the function that performs multiple axes linear interpolation by using multiple IC chips.
Fig. 3.10-1 shows the connection example of 12 axes linear interpolation with 3 chips. Since the main chip plays a role to send the
synchronous pulse for interpolation driving, set the interpolation speed parameter to the main axis in the main chip.
As shown in the figure, 8 signals for multichip interpolation (MPLS,MCLK,MERR,MINP,MDT3
~
0) are each connected among
chips, and pull up with impedance of about
3.3KΩ. These signals cannot be used as general purpose input because they are shared
with the general purpose input signals (PIN7
~
0).
Fig. 3.10-1 The Connection Example of Multichip Axes Interpolation
Each signal works as follows.
Table 3.10-1 Operation of Each Signal in Multichip Interpolation
Signal (Pin No.)
Signal Function
Direction
Shared General
Purpose Input Signal
MPLS(132)
Synchronous pulse of interpolation drive
Main
→
Sub
PIN7
MERR(133)
Error occurred / Stop of main chip
Main
←→
Sub
PIN6
MINP(134)
In-position waiting
Main
←
Sub
PIN5
MCLK(135)
Clock of data transfer for MDT3
~
0
Main
←→
Sub
PIN4
MDT3
~
0(136
~
139)
Transfer data of finish point in each chip
Main
←→
Sub
PIN3
~
0
+3.3V
From
OSC
16MHz
Host CPU
37
38
YPP
YPM
XPP
XPM
UPP
UPM
ZPP
ZPM
MPLS
MI NP
MERR
MCLK
MDT3
MDT2
MDT1
MDT0
CLK
D15
~
0
A2
~
0
CSN
RDN
WRN
RESETN
MCX514
Main
Sub1
Sub2
First axis drive pulse
Second axis drive pulse
Third axis drive pulse
Fourth axis drive pulse
39
40
41
42
43
44
132
133
134
135
136
137
138
139
37
38
YPP
YPM
XPP
XPM
UPP
UPM
ZPP
ZPM
MPLS
MI NP
MERR
MCLK
MDT3
MDT2
MDT1
MDT0
CLK
D15
~
0
A2
~
0
CSN
RDN
WRN
RESETN
MCX514
Fifth axis drive pulse
Sixth axis drive pulse
Seventh axis drive pulse
Eighth axis drive pulse
39
40
41
42
43
44
132
133
134
135
136
137
138
139
37
38
YPP
YPM
XPP
XPM
UPP
UPM
ZPP
ZPM
MPLS
MI NP
MERR
MCLK
MDT3
MDT2
MDT1
MDT0
CLK
D15
~
0
A2
~
0
CSN
RDN
WRN
RESETN
MCX514
Ninth axis drive pulse
Tenth axis drive pulse
Eleventh axis drive pulse
Twelfth axis drive pulse
39
40
41
42
43
44
132
133
134
135
136
137
138
139
3.3K
Ω
×8