11/19/2018 5:34 PM | |
Posts: 7 Rating:
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Hello all, I configured HSC_4 on an S7-1200 AC/DC/Relay, firmware V3, as shown in the attached screenshots to measure the speed of a shaft. My understanding is that I should be able to read the frequency directly from the configured input address (ID1012 in this case). However, when I download the program to the PLC and run the system, the frequency is always zero. I made sure I set the input filter of the digital input (I0.6) to 0.2 ms (pulse is 0.5 ms high and 0.5 ms low) I verified that there is pulse at the PLC input with an oscilloscope (~25 VDC pulse) Any thoughts on why this is not working? Thank you AttachmentHSC_config_screenshots.zip (339 Downloads) |
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