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5. I/O Signal Control and Signal Functions
5.1 PIO Patterns and Signal Assignments
This controller provides five PIO (Parallel I/O) patterns to meet the needs of various applications.
To select a desired PIO pattern, set a corresponding value from 0 to 4 in user parameter No. 25 (PIO
pattern selection).
The features of each PIO pattern are explained below:
Parameter No.
25 setting
Feature of PIO pattern
0 Conventional
This pattern is compatible with the pin assignments of the RCP controller.
1 Standard
All functions of the RCP controller are available, plus the home-return command
input, servo ON input, reset input, moving output and ready output.
2 64-point
positioning
Compared with the standard pattern offering only 16 positioning points, this pattern
provides up to 64 positioning points.
However, the servo ON input, ready output and zone output have been removed.
3
2 zone output signals
Compared with the standard pattern offering only one zone output signal, this pattern
provides two zone output signals.
However, the moving output has been removed.
The boundaries for the second zone output signal are specified in user parameter
Nos. 23 and 24.
4 Teaching
This pattern allows for normal positioning operation, as well as jogging and writing of
current position to a specified position using I/Os.
Switching between the normal positioning mode and teaching mode is effected by the
MODE input signal.
The mode switching completion output has been added to indicate that the modes
have been switched.
However, the zone output has been removed.
(Note) Position data can be rewritten up to around 100,000 times.
Quick reference table for functions available under each PIO pattern (
{
--- Available, X --- Not available)
Input signals
Output signals
No. 25
Number of
positioning
points
Number of
zone output
signals
Home
return
Servo ON
Reset
Jog
Write
Moving
Ready
0
16
points
1
signal
X X X X X X X
1
16 points
1 signal
{
{
{
X X
{
{
2 64
points None
{
X
{
X X
{
X
3
16 points
2 signals
{
{
{
X X X
{
4 16
points None
{
{
{
{
{
{
{
For details, refer to 5.1.2, “Signal Assignment Table for Respective PIO Patterns.”
Note: The servo ON input signal (SON) is not available if the conventional or 64-point positioning
pattern is selected.
Therefore, always set user parameter No. 21 (Servo ON disable selection) to “1: [Disable]”
when the controller is used in either of these PIO patterns.