Chapter 3 Before positioning
3- 6
• In case of speed control, some items as figure below doesn’t affect the operation.
- If Control is specified as SPD, coordinates, pattern, method, M code, dwell time doesn’t affect the
operation.
- So in case of speed control, when object stops by STP command, it stops without dwell time and
M code doesn’t operate.
(1) Example
• It assumes that operation data is specified as shown table 3-3
Step
no.
Coord
.
Pattern
Contr
ol
Metho
d
Rep
step
Address
[Pulse]
M
Code
A/D
No.
Speed
[pls/s]
Dwell [㎳]
1 INC END SPD SIN 0 10 10 1 100 10
<Table 3-3 operation data example of speed control>
• In table 3-3, since Control is ‘SPD’, step no. 1 is operation data of speed control.
• Since Address is positive number and Speed is 100, target moves forward with 100 pls/s speed
regardless of current position until stop command (DEC. stop or EMG stop).
• If object moves, flag (X axis: K4200, %KX6720, Y axis: K4300, %KX6880) is on. And if DEC.
stop command is executed, it stops after deceleration without dwell time and flag turns off
immediately.
• At this time, deceleration time conforms to that in operation data, not operand of instruction.
< Figure 3-3 Operation of speed control >
These items don’t affect the operation in case of speed
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