Internet PLC Forum
General => Technical support => Topic started by: bigbadbobszoomzoom on September 05, 2005, 09:01:12 AM
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Am seeking information on how to set the pwm output on a T100MD 888+ plc. Currently the pwm output is set in a custom function as, set pwm 7,1,32. Seven being the output, one being the percentage and 32 being the pulse . Later in the logic ladder, in another custom function is, set bit output {1},6. This designates the output to #7. No mater how I change the set pwm, 1,32 or 20,500 or whatever, the pulse width remains the same. Any help is appreciated.
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The n parameter of the setPWM function represents the channel number, not the output number. It should be set to 1 or 2, which correspond to outputs 7 and 8 respectively. It documentation is a little confusing on this matter (mentioning that n should be a number between 1 and 8).
I don't understand what you were saying in the second half of your post but you shouldn't be doing anything with output 7 elsewhere in the ladder if you intend on using it as a PWM output.