IAI America PCON-CFA - Manual (Page 152)

4. SCON-CA
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(3) Operation in the full direct mode
Operate the actuator by specifying from the PLC all conditions required for positioning, such as the PLC’s target
position and positioning band.
z Example of operation (push-motion operation)
[1] Set the target position data for the target positions (*) corresponding to output addresses n and n+1.
[2] Set the positioning band data for the positioning bands (*) corresponding to output addresses n+2 and n+3.
[3] Set speed data for the speeds (*) corresponding to output addresses n+4 and n+5.
[4] Set the position-zone output boundary data for the zone boundary+ and zone boundary- (*) corresponding to
output addresses n+6 to n+9.
[5] Set the acceleration data for the acceleration (*) corresponding to output address n+10.
[6] Set the deceleration data for the deceleration (*) corresponding to output address n+11.
[7] Set the push-current limiting value data for the push-current limiting value (*) corresponding to output
address n+12.
[8] Set the load current threshold data for the load current threshold (*) corresponding to output address n+13.
[9] Turn the push specification (PUSH) signal ON.
[10] Specify the push direction using the push direction specification (DIR) signal. (Refer to (22) of 4.4.7.)
[11] Turn the positioning command (DSTR) signal ON while the positioning complete (PEND) signal is ON or
moving signal (MOVE) is OFF.
The data set in [1] to [8] are read by the controller at the leading edge of the DSTR signal.
[12] The DSTR signal turns ON and PEND turns ON tpdf thereafter.
[13] Turn the DSTR signal OFF after confirming that the PEND signal has turned OFF or MOVE signal has turned
ON. Do not change the values set in [1] to [8] until the DSTR signal is turned OFF.
[14] The MOVE signal turns ON simultaneously as the PEND signal turns OFF.
[15] The current position data (*) in input addresses n and n+1 are constantly updated.
[16] The PEND signal turns ON when the motor current reaches the current-limiting value set in [7] while the
DSTR signal is OFF. (Push-motion operation is completed.)
If the motor current does not reach the current-limiting value set in [7] after the positioning band set in [2] has
been reached, the missed load in push-motion operation (PSFL) signal turns ON. In this case, the PEND
signal will not turn ON. (The actuator has missed the load during push-motion operation.)
[17] Turn the PUSH signal OFF after the PEND signal or PSFL signal has turned ON.
z Example of operation (normal positioning operation)
In normal positioning operation, the signal in [9] is set to OFF.
When the remaining travel falls within the positioning band set by the position data table, the PEND signal turns
ON as long as the DSTR signal is OFF.
(*) Refer to 4.4.1.