Open loop motion control
12.5 Configuring an Axis of Motion
S7-200 SMART
500 System Manual, 09/2015, A5E03822230-AC
Enter the JOG_SPEED and the JOG_INCREMENT values:
● JOG_SPEED: The JOG_SPEED (Jog speed for the motor) is the maximum speed that
can be obtained while the JOG command remains active.
● JOG_INCREMENT: Distance that the tool is moved by a momentary JOG command.
The following figure shows the operation of the Jog command. When the Axis of Motion
receives a Jog command, it starts a timer. If the Jog command is terminated before 0.5
seconds has elapsed, the Axis of Motion moves the tool the amount specified in the
JOG_INCREMENT at the speed defined by JOG_SPEED. If the Jog command is still
active when the 0.5 seconds have elapsed, the Axis of Motion accelerates to the
JOG_SPEED. Motion continues until the Jog command is terminated. The Axis of Motion
then performs a decelerated stop. You can enable the Jog command either from the
Motion Control Panel or with a motion instruction. A representation of a JOG operation is
shown in the figure below.
JOG_INCREMENT: JOG command is active for less than 0.5 seconds.
JOG command is active for more than 0.5 seconds.
JOG command is terminated (Starts ramp from JOG_SPEED to SS_SPEED).
The speed reached can be anywhere from the SS_SPEED to the JOG_SPEED, depending
on the length of the JOG_INCREMENT.
Entering acceleration time
Enter the acceleration and deceleration times in the edit boxes.
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