text: <s>[INST] Looking for a good example of speed/position stand alone master/slave for PF755 Hello, I have a customer that has an application with a dual shaft mixer where he is looking to keep the two shafts 180 degrees out of sync with one another using PF755 and absolute encoders as a stand alone application. Is there any supporting documentation for this or do you have any ideas on what would be the recommended way of approaching this. [/INST] The PF755 drives can do this - and technically you only need one PF755 - the other drive could be dumb as long as the master motor has encoder feedback. The slave drive would receive both the master feedback and slave feedback and do electronic gearing. However, it sounds like the 180-deg out of sync is required because the two shafts have the potential for physically interfering with each other? If this is true, you're getting into dangerous territory where it would be better to have a PLC and do CIP motion with both PF755 axes. While it's technically possible to do everything you need using devicelogix within the drive, doing all of the logic in a 1769-L18ERM CompactLogix processor is much, much, MUCH easier. So much so that the time you save easily pays for the cost of the L18ERM processor. \\n </s>