IAI America ERC2 - Manual (Page 151)

8. Parameter Settings
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8.2.3 Parameters Relating to the External Interface
z 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.
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)
This pattern assumes that the actuator is used in place of an air cylinder.
The number of positioning points is limited to three, but a direct command input and a
position complete output are provided separately for each target position in line with the
conventional practice of air cylinder control.
This lets you control the actuator just like an air cylinder.
2
16 points (setting by zone boundary parameters)
The number of positioning points is increased to 16.
The boundaries defining the output range of the zone signal are set by parameters.
3
16 points (setting in zone fields in the position table)
The number of positioning points is increased to 16.
The boundaries defining the output range of the zone signal can be set differently for each
position in the position table. Accordingly, this pattern is ideal for applications where the
setup is changed from time to time.
The factory setting is “0: [8 points mode].”
z 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.
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
The factory setting is “0: [Level mode].”