IAI America RCP2-CF - Manual (Page 63)

43
5. I/O Signal Control and Signal Functions
5.1 PIO Patterns and Signal Assignments
This controller provides six 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 5 in 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 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.
5 4 points (air cylinder)
Use of the RCP2 as an air cylinder is assumed in this pattern.
The number of positioning points is limited to four, but a direct command input and a position complete
output are provided for each target position in line with the conventional practice of air cylinder control.
This lets the user control the RCP2 just like an air cylinder.
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       
5 4 points 1 signal X X  X X X X
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, 64-point or 4-point
positioning pattern is selected.
Therefore, always set parameter No. 21 (Servo ON disable selection) to “1: [Disable]” when
the controller is used in either of these PIO patterns.