Kinco HP043-20DT, Руководство пользователя

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Kinco-HP
User Manual
47
PTO/PWM generator in the user program.
There are two procedures for using PTO: Configure related control registers and initialize PTO.
Execute PLS instruction.
Use SM0.1 (the first scan memory bit) to call a subroutine that contains the initialization
instructions. Since SM0.1 is used, the subroutine shall be executed only once, and this reduces
CPU scan time and provides a better program structure.

Execute the PTO (Single-Segment Operation)
1) Set control byte SMB67 according to the desired operation.
For example, SMB67 = B#16#85 indicates:
 Enable the PTO/PWM function
 Select PTO operation
 Select 1μs as the time base
 Allow updating the pulse number and cycling time.
2) Set SMW68 according to desired cycle time.
3) Set SMD72 according to desired pulse number.
4) (Optional) use ATCH to attach the PTO0-complete event (event 28) to an interrupt routine
to respond in real time to a PTO0-complete event.
5) Execute the PLS instruction to configure PTO0 and start it.

Changing the PTO Cycle Time (Single-Segment Operation)
Follow these steps to change the PTO cycle time.
1) Set control byte SMB67 according to the desired operation.
For example, SMB67 = B#16#81 indicates:
 Enable the PTO/PWM function
 Select PTO operation
 Select 1μs as the time base
 Allow updating the cycle time value.