IAI America SCON-C - Manual (Page 211)

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Appendix
 Output mode of position complete signal
This parameter is effective when any PIO pattern other than “5” (solenoid valve mode 2 [3-point type]) is
selected.
It defines the status of completed position number signals [PM1 to PM256], movement complete signals at
respective positions [PE0 to PE6] and position complete signal [PEND] to be applied if the servo turns off or
“position deviation” occurs while the actuator is standing still after completing positioning.
The following two conditions can be considered:
[1] The position has deviated, due to external force and while the servo was on, beyond the value set in the
“Positioning band” field of the position table.
[2] The position has deviated, due to external force and while the servo was off, beyond the value set in the
“Positioning band” field of the position table.
This parameter is provided to permit flexible specification of how the “position complete status” is monitored in
accordance with the characteristics of the system or sequence circuit on the PLC side.
The ON/OFF status of each position complete signal is controlled as follows in accordance with the setting of
parameter No. 39.
Setting of
parameter No. 39
Definition of completed position number signals [PM1 to PM256], movement complete
signals at respective positions [PE0 to PE6] and position complete signal [PEND]
0 [PEND] [1] The servo is on
The signal remains ON even after the current position has exited the range set by the
“Positioning band” field of the position table, with respect to the target position.
[2] The servo is off
The signal is OFF unconditionally regardless of the current position.
1 [INP] Regardless of the servo on/off status, the signal turns ON if the current position is within the
range set by the “Positioning band” field of the position table, with respect to the target
position, and turns OFF if the current position is outside this range.
* In this mode, the applicable signals are used as limit switches.
The factory setting is “0 [PEND].”
* In the pulse-train mode, the INP mode is selected automatically when the mode selector switch is set to
“AUTO.” In this case, each applicable signal is OFF when the servo is OFF.
If the mode selector switch is set to “MANU,” each applicable signal turns ON even when the servo is OFF,
as long as the actuator position is within the range specified by parameter No. 10, “Default positioning band.”