text: <s>[INST] PF70 and Purge feature Greetings, Is it possible to set the purge feature up on an effluent tank so that if there is a failure of the float valve to the PLC; that the drive can go into purge mode to switch on at a high level limit switch and off at a low level limit switch? I have a customer wanting to set something similar up in a Wastewater treatment plant, but they also want to be able to go into manual control mode as well. Any suggestions are welcome. [/INST] Hi, just a question.... how do you want to control the drive in automatic mode (I mean the start and reference control) ? - fuzzy logic \\n </s>