IAI America SCON-C - Manual (Page 208)

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Appendix
3.2.3 Parameters Relating to the External Interface
 PIO pattern selection
Select the PIO operation pattern in parameter No. 25.
This setting forms the basis of operation, so be sure to set this parameter at the beginning.
The factory setting is “0.”
Parameter No.
25 setting
Feature of PIO pattern
0 Positioning mode [Standard type]
A basic type supporting 64 positioning points and two zone outputs.
* How to set zone boundaries within which to output a zone signal:
Zone boundaries are set using parameter Nos. 1 and 2 for one zone output, and in the
position table for another zone output.
1 Teaching mode [Teaching type]
In this type, 64 positioning points and one zone output (boundaries are set in the position
table) are supported.
In addition to the normal positioning mode, the user can also select the teaching mode in
which the actuator can be jogged via commands from a PLC and the current actuator position
can be written to a specified position.
(Note 1) Jog commands from a PLC are also accepted in the positioning mode.
(Note 2) Positions can be rewritten by approximately 100,000 times.
2 256-point mode [256-point type]
The number of positioning points is increased to 256, so only one zone output is available
(boundaries are set in the position table).
3 512-point mode [512-point type]
The number of positioning points is increased to 512, so no zone output is available.
4 Solenoid valve mode 1 [7-point type]
The number of positioning points is limited to seven to offer separate direct command inputs
and movement complete outputs for respective positions.
PLC ladder sequence circuits can be designed easily.
5 Solenoid valve mode 2 [3-point type]
Use of the controller as an air cylinder is assumed in this type.
Movement complete output signals function differently in this type, compared to the 7-point
type.
Specifically, the signal functions not only to “indicate movement complete,” but also to “detect
a position” in the same manner as auto-switches of an air cylinder.
Take note that incremental position commands are not supported in this mode.