31.5.9 Normal Pulse Output

Pulse output includes normal pulse output, which outputs a frequency set to a predetermined pulse-output number, and acceleration/deceleration pulse output, which gradually increases the frequency up to a set pulse-output value. You can use up to 4 normal pulse outputs in the LT3000 Series or STC6000 Series, and up to 2 in the LT4000 Series. A positioning-control motor can be driven by connecting a CW or CCW stepping motor or connecting a CW or CCW servo-motor amplifier. The main features of normal pulse output are shown in the following table.

Summary of functions	Browse to
Sets the output frequency	31.5.8.1 Output Frequency - PWM Output
Sets the output pulse count	31.5.9.2 Output Pulses - Normal Pulse Output
Parameter change	31.5.8.3 Parameter change request and change completion acknowledgment - PWM Output
Checks abnormal status of the output frequency and output pulses.	31.5.9.4 Abnormal Status of Normal Pulse Output - Normal Pulse Output
Starts and stops the normal pulse output	31.5.9.5 Normal Pulse Output Control - Normal Pulse Output
Checks the start and stop status of the normal pulse output	31.5.9.6 Output Status and Output Completion Status of Normal Pulse Output - Normal Pulse Output
Checks the status of the output terminal	31.5.9.7 Normal Pulse Terminal Status - Normal Pulse Output

Summary

In GP-Pro EX, you can set up the initial value for each parameter. After the system is running, you can change parameters with system variables.

The procedure for setting the pulse output is summarized below.

Part of the settings can also be set up with logic program I/O driver instructions.
32.23 I/O Driver Instructions

Setting Up Initial Values

Refer to the setup procedures for GP-Pro EX.

Changing After System is Running

Set the output frequency and the Output pulse count.
Change the parameter under [Request Special I/O Parameter Change].
Under [Special I/O Parameter Change Completed], acknowledge that the parameter has been changed.
Output the data with [Control Special I/O].
See "Special I/O state" for acknowledgment.

The [Request Special I/O Parameter Change] and [Special I/O Parameter Change Completed] operations reflect all the CH parameters you change.
The acceleration/deceleration pulse output is OFF then starts up, and outputs one time at ON→OFF. The Output pulse count is updated every ON→OFF. When you forcibly stop the pulse output, the output stops no matter what state the pulse is in. Therefore, the pulse output generated during the forced stop might not be counted in some cases.
Pulse outputs have a limit to the output frequency and pulse count.
For details, see 31.5.14 Restrictions.
Right after transferring, operations use parameter values set up in GP-Pro EX. Any restarts, which include going off-line, reset, and turning power OFF, use stored system variables as parameters.