Nova Electronics MCX514, User Manual

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NOVA electronics Inc. MCX514 -
87
－ 87 －
2.8 General Purpose Input / Output Signal
MCX514 has 8 general purpose input / output pins in each axis, nPIO7
～
0.
When not using the input signal that has a specific function, disable its function, and it can be used as a general purpose input
signal.
2.8.1
nPIOm
Signal
nPIOm signal can be used as input/output signals for various purposes as shown below.
1) General purpose input signal
2) General purpose output signal
3) Input signal as the activation factor of a synchronous action
4) Synchronous pulse output signal as the action of a synchronous action
5) Output signal to output drive status
6) Output signal to output the comparison result of a multi-purpose register
7) Input signal for driving by external signals
■
nPIOm signal function setting
The function of nPIOm signals can be set by PIO signal setting 1 command (21h).
WR6
D7 D6 D5 D4
H L
D15 D14 D13 D12 D11 D10 D9 D8
D3 D2 D1 D0
P1M0 P0M1 P2M0 P3M0 P0M0 P1M1 P2M1 P3M1
nPIO0
Signal nPIO1
Signal nPIO2
Signal nPIO3
Signal
P4M0 P5M0 P6M0 P7M0 P4M1 P5M1 P6M1 P7M1
nPIO4
Signal nPIO5
Signal nPIO6
Signal nPIO7
Signal
Set 2 bits corresponding to each nPIOm signal of WR6 register according to purposes.
The functions corresponding to 2 bits of each nPIOm signal are shown in the table below.
Table 2.8-1 nPIOm Signal Function Setting
（
k:0
～
7
）
PkM1 bit PkM0 bit Function
0 0
General purpose input
nPIO7~0 signals become an input state.
In synchronous action, it can be activated by the signals ↑ or ↓.
In driving by external signals, relative position driving or continuous pulse
driving can be activated by nPIO4, 5 signals.
0 1
General purpose output
nPIO7~0 signals become an output state.
1 0
Drive status output
nPIO7~0 signals become an output state and output the drive status.
1 1
Synchronous pulse
・
MRm comparison output
nPIO7~0 signals become an output state. nPIO3~0 output synchronous
pulses and nPIO7~4 output MRm comparison value.