wpuryear
Member
I have a couple of questions regarding the PWM output on a Micrologix 1400 BXBA. The 20 KHz output shown in the attached photo is being fed to a high speed counter input. The low level is roughly 12 volts which is not low enough (1.5 volts) for the input to recogize it as "off". Is there a way to configure the PWM output to be used with a high speed counter input?
The other question to reveal my ignorance, is that if I instead route the output accross a resistor of any value, my scope does not see the square wave but a constant 24 volts.
Any insight would be most helpful.
Walt
The other question to reveal my ignorance, is that if I instead route the output accross a resistor of any value, my scope does not see the square wave but a constant 24 volts.
Any insight would be most helpful.
Walt