IAI America SCON-C - Manual (Page 89)

71
 Start position number (ST0 to ST6) Solenoid valve mode 1 [7-point type]
These signals are effective when “4” is set in parameter No. 25 (= when the air-cylinder type is selected).
Upon detection of an OFF
 ON rise edge or ON level of this signal, the actuator will move to the target position
set in the corresponding position data.
Before executing this command, the target position, speed and other operation data must be set in the position
table using a PC/teaching pendant.
If two or more ON signals are detected at the same time, priority will be given to the position command of the
smallest number among all detected commands. (Example: If ON signals of ST0 and ST1 are detected at the
same time, the actuator will start moving to position 0.)
Although commands are executed upon detection of ON signal edge, priority is given to the command that was
specified the earliest. In other words, a signal input will not be accepted while the actuator is moving. Even if a
different position signal is turned ON while the actuator is moving, the actuator will not commence moving to the
new position even after reaching the target position.
Correspondence table of input signals and command positions
Input signal Command position
ST0 Position No. 0
ST1 Position No. 1
ST2 Position No. 2
ST3 Position No. 3
ST4 Position No. 4
ST5 Position No. 5
ST6 Position No. 6
If a movement command is issued when the first home return is not yet completed after the power was input,
home return will be performed automatically to establish the coordinates first, after which the actuator will move
to the target position.
 Movement to each position (ST0, ST1, ST2) Solenoid valve mode 2 [3-point type]
Since the number of positioning points is limited to three, the actuator can be controlled just like an air cylinder.
While this signal is ON, the actuator will move toward the target position.
If the signal turns OFF while the actuator is moving, the actuator will decelerate to a stop.
Before executing this command, enter a target position in the “Position” field for position No. 0, 1 or 2 in the
position table.
Input signal Target position Remarks
ST0 Rear end The target position is defined in the “Position” field for position No. 0.
ST1 Front end The target position is defined in the “Position” field for position No. 1.
ST2 Intermediate point The target position is defined in the “Position” field for position No. 2.