Toshiba TOSVERT VF-AS3 Manual page 9

2.2.1.2 About functions
Here, description is given by using the parameter for multi-step point 1. The same applies also to multi-step
points 2 to 7.
The function parameter (A546) is a parameter that allows you to select the method to specify the target
position as shown in the table below.
• When A546=0
- The target position (A544, A545) has a positive value.
- The target position (A544, A545) is an absolute position.
For example, if a target position 100000 (A544=10, A545=0) is set, the target position is the point
moved for100000 pulses from the origin in the positive direction.
• When A546=1
- The target position (A544, A545) has a negative value.
- The target position (A544, A545) is an absolute position.
For example, if a target position 100000 (A544=10, A545=0) is set, the target position is the point
moved for100000 pulses from the origin in the negative direction.
• When A546=2
- The target position (A544, A545) has a positive value.
- The target position (A544, A545) is a relative position.
For example, if a target position 100000 (A544=10, A545=0) is set, the target position is the point
moved for100000 pulses from the position of the previous settlement in the positive direction.
• When A546=3
- The target position (A544, A545) has a negative value.
- The target position (A544, A545) is a relative position.
For example, if a target position 100000 (A544=10, A545=0) is set, the target position is the point
moved for 100000 pulses from the position of the previous settlement in the negative direction.
(Caution)
• When a relative position command is used, change the point number after positioning control settles.
(Switch the preset speed command terminal).
• When the same point number is used for the relative position command, turn OFF all the preset speed
signals once, then turn ON the signal corresponding to the specified point number again.
2.2.2 Operation style
Perform positioning control by multi-step point setting in the following procedure.
(1) Turn ON the positioning preparation signal (digital input terminal function 178/179).
(2) Turn ON the run signal (digital input terminal function 2/3 or 4/5).
Then, the motor is in the servo lock status.
(3) Turn ON the multi-step point signal (digital input terminal function 10/11, 12/13, or 14/15).
The motor rotates so that the load machine should move to the target position specified by the multi-step point
signal.
(4) When the positioning control settles and the deviation between the target position and the current position
becomes ±F381 or less, the positioning completion signal (digital output terminal function 118/119) is turned
ON.
Setting
0 Absolute position command
1 Absolute position command
2 Relative position command
3 Relative position command
Command method
7
E6582187
Sign
Positive
Negative
Positive
Negative