Have several (12) Modicon Micro model # 110cpu51200. They are connected to my network. I can access them with the main computer in the control room using Proworx NxT connecting through mobus bm85 bridges. Problem is some of the Micros will not let me start or modify them from the control room. I get a must be logged on error. If I connect with the laptop plugged directly into the micro I do not get this error. What am I doing wrong on the ones not working and how do I correct it?