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31 POSITIONING INSTRUCTION
31.4 Relative Positioning
Outline of operation
For each speed, refer to Page 388 Items related to speed.
*1 When FX5 operand is specified
*2 Remains on until it is turned off using program or engineering tool or the positioning instruction is next driven again.
Basic operation
The following describes the basic operation.
1. After the drive contact is turned on, pulse output is started and the speed is increased from the bias speed.
2. After the speed has reached the specified speed, the operation will be performed in the specified speed.
3. Deceleration starts from near the target position.
4. After movement to the specified positioning address, pulse output is stopped.
DRVI/DDRVI (s1) (s2) (d1) (d2)
Drive
contact
*2
Drive contact
Instruction execution
complete flag
SM8029
Instruction
execution complete
flag (d2)
*1
Maximum speed
Bias speed
Speed
Positioning address (s1)
Time
Deceleration
time
Acceleration
time
Command
speed (s2)
Bias speed
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