Jog Operation - Mitsubishi Electric MELSEC-L02SCPU User Manual

7.9

JOG Operation

JOG operation is used for moving the axis only by a desired movement amount without using positioning data. Use this
operation when checking the connection of the positioning control system, or to move the workpiece to inside the
range of software stroke limits after operation has stopped by the software stroke limit function. JOG operation is
started with the JOG start instruction (IPJOG1) by setting the JOG speed, JOG ACC time, JOG DEC time and direction
( Page 149, Section 7.12.1 (5)).
Note that the explanations in this section assume use of Axis 1. For the special relay, special register, dedicated
instructions, error codes, and warning codes for Axis 2, refer to the following.
• Special relay and special register:  Page 62, Section 7.4 (2)
• Dedicated instructions:  Page 137, Section 7.12
• Error codes:  Page 173, Section 7.14 (1)
• Warning codes:  Page 177, Section 7.14 (2)
(1) Flow of operation
Operation step
JOG operation is started with the JOG start instruction (IPJOG1). When the execution command for JOG start
1) instruction (IPJOG1) turns on, the axis starts to accelerate in the set direction over the JOG ACC time. The Axis 1 busy
(SM1840) turns on.
2) Once the accelerating workpiece reaches the JOG speed, the axis continues to move with maintaining the JOG speed.
When the execution command for JOG start instruction (IPJOG1) turns off, the axis starts to decelerate from the JOG
3)
speed over the JOG DEC time.
4) The axis stops when the speed drops to 0. The Axis 1 busy (SM1840) turns off.
V
JOG start instruction
execution command
JOG direction
Axis 1 BUSY
(SM1840)
104
Forward JOG
1)
ON
OFF
OFF
ON
OFF
Description of operation
2) 3) 4)
Reverse JOG
ON
t