IAI America ERC - Manual (Page 127)

107
8.3.3 Parameters Relating to the External Interface
 PIO pattern selection
Select a desired PIO operation pattern using parameter No. 25.
This parameter sets the basis of operation, so be sure to set it first.
The factory setting is “0: [8 points].”
Setting of parameter No. 25 Feature of the PIO pattern
0
8 points
The basic pattern providing eight positioning points.
1
3 points (air cylinder)
Use of the ERC as an air cylinder is assumed in this pattern.
The number of positioning points is limited to three, 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 ERC just like an air cylinder.
2
16 points
The number of positioning points is increased to 16.
However, the home return input is not provided.
 Movement command type
When the PIO pattern is set to “3 points,” define the operation condition of the movement command input (ST0
to ST2) in parameter No. 27.
The factory setting is “0: [Level mode].”
Description of the movement command input Setting
Level mode:
The actuator starts moving when the input signal turns ON. When the signal turns
OFF during the movement, the actuator will decelerate to a stop and complete its
operation, thereby returning to the initial mode.
0
Edge mode:
The actuator starts moving when the rise edge of the input signal is detected. The
actuator will not stop even when the signal turns OFF during the movement, until
the target position is reached.
1