Nova Electronics MCX514, User Manual

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NOVA electronics Inc. MCX514 -
101
－ 101 －
2.12 Other Functions
2.12.1 Driving By External Pulses
This function is that controls relative position driving and continuous pulse driving not by the commands but by external signals.
(nEXPP, nEXPM). As the number of motor axis controlled by the system increases, there is a possibility that the CPU cannot
handle manual operations appropriately such as JOG feed or teaching mode due to the CPU load. This IC can reduce the host
CPU load using driving by external pulses. And by inputting an encoder 2-phase signal of a manual pulsar, jog feed will be
enabled.
nPIO4, 5 signals of general purpose input/output signals are assigned to nEXPP, nEXPM signals.
To perform driving by external signals, the following items must be set.
①
Set nPIO4, 5 signals to the input by PIO signal setting 1 command (21h).
②
Set the driving mode by PIO signal setting 2
・
Other settings (22h).
■
Function Setting for Driving by External Signals of nPIOm Signal
To perform driving by external signals, set nPIO4, 5 signals of general purpose input/output signals to nEXPP, nEXPM input
signals for driving by external pulses.
It sets D11~8 bits of 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
P4M0 P5M0 P4M1 P5M1
nPIO4 Signal nPIO5 Signal
nEXPM nEXPP
To use the function of nPIO4 signal as the input signal for driving by external pulses (nEXPP), set D9, 8 bits to 0, 0. Similarly, set
D11, 10 bits of nPIO5 signal to 0, 0.
■
Mode setting for driving
This is the mode setting for driving by external pulses. It sets D9, 8 bits of PIO signal setting 2
・
Other settings (22h).
WR6
D7 D6 D5 D4
H L
D15 D14 D13 D12 D11 D10 D9 D8
D3 D2 D1 D0
EXOP0 EXOP1
Driving Mode
by External Pulses
Use 2 bits, D9, 8 bits to set the mode of driving by external signals (nEXPP, nEXPM).
The driving mode corresponding to each bit is shown in the table below.
Table 2.12-1 Mode of Driving by External Signals
D9(EXOP1) D8(EXOP0) Mode of driving by external signals
0 0 Disables the driving by external signals
0 1 Continuous pulse driving mode
1 0 Relative position driving mode
1 1 Manual pulsar mode