jraef
Member
The Stop Bit logic issue only related to network stop commands, this happens in hard wire too. But it brings up another point, there were other glitches in level 2 firmware, you should update that to at least 3.001, but better if you go to 4.001 (just released this month) if you plan on using ADC, because 3.001 caused an anomaly in Studio5000 not allowing ADC on that rev for some reason. If you don't know, you can flash the firmware yourself with CCW over the EtherNet port if the drive is powered up, or even with a built in web page interface that pops up when you connect via USB cable to the back of the Control Core (after removing it from the drive). If I were you, I would flash them to the latest firmware before spending much more time on this so that in case it was some combination of issue, your work around doesn't cause new ones later if you do flash it.
Still, that said, the fact that the problem gets worse as load on the drive increases is a glaring clue to the source being EMI / noise related. As current increases, so does EMI and common mode noise. So something is getting through to your I/O in my opinion.
Still, that said, the fact that the problem gets worse as load on the drive increases is a glaring clue to the source being EMI / noise related. As current increases, so does EMI and common mode noise. So something is getting through to your I/O in my opinion.
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