IAI America MSCON - Manual (Page 216)

3.8 Control and functions of Input and output signals of Remote I/O Mode
208
 
Caution: (1) At occurrence of an alarm in the release level Note 1 , RES can reset the
alarm. Cancel the remaining moving distance after confirmation that
alarm signal *ALM (being ON in normal state and OFF at occurrence of
an alarm) is set to ON.
Note 1: [Refer to 8.4 Alarm List for details of alarms.]
(2) Turning *STP OFF with the actuator being in the positioning complete
state causes PEND to be turned OFF. Note that this situation may not
occur when a sequence program is created.
(2) Use of start signal ST*
Stop
status
Start signal
Velocity
Time
Input start
signal for
position 1
(Moving start)
Moving
comp.
Positioning
completion
signal output
Deceleration
2)
3) 1) 4) 5)
ON
OFF
Decelerate and
stop by start signal
input to Position 1
being OFF
Movement
resumed
by start signal
input to Position 1
being ON
Acceleration Deceleration Acceleration
2) 3) 1) 4) 5)
„ Control method
If start signal ST* is turned OFF during movement, the actuator can be paused.
Use the control method for interlock in case where an object is invaded into the moving
direction of the actuator being moved.
1) If the ST* signal is turned OFF during movement, the actuator is paused. The deceleration is
the value set in the position table.
2) Turning the ST* signal OFF causes the positioning to be interrupted and deemed complete
signal PEND to be turned ON.
3) If the ST* signal is turned ON again, the remaining movement is continued. The acceleration
is the value set in the position table.
Before
operation
Positioning
complete state
Operation
Temp.
stop
Cont.
Op.
Position
complete
Start Signal
ST*
(PLCoMSCON)
Positioning Completion Signal
PEND
(MSCONoPLC)
Operation of actuator
PEND turned
ON
PE* not
turned ON
Current Position No.
PE*
(MSCONoPLC)