Kinco KS Series - Page 43

Kinco-KS series
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 Select PTO operation
 Select multi-segment operation
 Select 1μs as the time base
2) Set an odd number as the starting position of the profile table into SMW168.
3) Use V area to configure the profile table.
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.
4.3.2.4PWM Operations
Following takes PWM0 as an example to introduce how to configure and operate the
PTO/PWM generator in the user program.
There are two procedures for using PWM: 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 PWM
1) Set control byte SMB67 according to the desired operation.
For example, SMB67 = B#16#D3 indicates:
 Enable the PTO/PWM function
 Select PWM operation
 Select 1μs as the time base
 Allow updating the pulse width value and cycle time value
2) Set SMW68 according to desired cycle time.
3) Set SMW70 according to desired pulse width.