Mitsubishi Electric MELSEC-F Series - External Command Positioning Operation

9 Positioning Control
9.5 External Command Positioning Operation
99
FX3U-1PG User's Manual
1
Introduction
2
Specification
3
System Configuration
4
Installation
5
Wiring
6
Before Starting Positioning Operation
7
Buffer Memory
8
Manual Control
9
Positioning Control
10
Program Example
9.5 External Command Positioning Operation
By the external command positioning operation start command, the operation starts with operation speed I,
detects the rise/fall edge of interrupt input 0, and changes the speed to operation speed II. Then, the rise/fall
edge of the interrupt input 1 is detected and stops immediately.
→ For change of the operation speed, refer to Section 6.6.
→ For details on the STOP command, refer to Section 6.5.
1. Operation
1) Set operation speed I and operation speed II.
2) When the operation command to start external command positioning operation is turned from off to on,
the external command positioning operation starts with operation speed I. (The positioning completion
flag turns off.)
3) When interrupt input 0 is detected, the speed changes to operation speed II.
4) When interrupt input 1 is detected, the operation immediately stops, and the operation completes by
turning on the positioning completion flag.
Point
When the interrupt input 1 is detected before the interrupt input 0 is detected, the operation immediately
stops.
2. Rotation direction
The rotating direction is determined by the sign (positive/negative) of the operation speed I.
• Operation speed Ι > 0: Forward
• Operation speed Ι < 0: Reverse
Point
When the signs (positive/negative) of the operation speed I and the operation speed II are different, the 2-
speed is operated with the bias speed. However, if the bias speed is 0, the operation is executed at 1 Hz.
Speed
Maximum speed
Operation speed II
Operation speed I
Time
Acceleration/
deceleration time
(Acceleration time)
Acceleration/
deceleration time
(Deceleration time)
External command
positioning
operation start
(BFM#25 b11)
Interrupt input 0
Interrupt input 1
1-speed completion flag
(BFM#28 b9)
Positioning
completion flag
(BFM#28 b8)
READY
(BFM#28 b0)
ON
OFF
OFF
ON
ON
OFF OFFON
OFF
ON
ON
OFF ONON
OFF
Bias speed