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NOVA electronics Inc. MCX514 -
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172
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Read Register in 16-bit Data Bus
All registers are 16-bit length.
Address
A2 A1 A0
Symbol
Register Name
Contents
0 0 0
RR0
Main status register
・
driving status and error status
・
ready for interpolation, quadrant for circle interpolation and
continuous interpolation pre-buffer stack counter (SC)
0 0 1
XRR1
YRR1
ZRR1
URR1
X-axis Status register 1
Y-axis Status register 1
Z-axis Status register 1
U-axis Status register 1
・
interrupt message
0 1 0
XRR2
YRR2
ZRR2
URR2
X-axis Status register 2
Y-axis Status register 2
Z-axis Status register 2
U-axis Status register 2
・
error message
・
finishing status
0 1 1
XRR3
YRR3
ZRR3
URR3
X-axis Status register 3
Y-axis Status register 3
Z-axis Status register 3
U-axis Status register 3
Page 0
・
input signal status
・
automatic home search execution state
Page 1
・
enable/disable of synchronous action set
・
acceleration/deceleration status, increase/decrease status of
acceleration/deceleration
・
status of timer and split pulse operation
・
finish point data transfer error during multichip interpolation
1 0 0
RR4
PIO read register 1
・
X-axis general purpose input/output signal status
・
Y-axis general purpose input/output signal status
1 0 1
RR5
PIO read register 2
・
Z-axis general purpose input/output signal status
・
U-axis general purpose input/output signal status
1 1 0
RR6
Data reading register 1
・
low word of data register (D15
~
D0)
1 1 1
RR7
Data reading register 2
・
high word of data register (D31
~
D16)
As with Write Register, each axis has RR1, RR2 and RR3 status registers, which will be read by the same address. The host
CPU specifies which axis should be accessed depends on the axis of written command just before. Or the user can specify
the axis by writing NOP command with axis assignment.
Regarding RR3 register, there are 2 kinds: Page 0 and Page1. The page can be specified by writing RR3 page display
command (7Ah, 7Bh). It will be Page 0 at reset.