Problem:
I am getting a control sync fault on 2 recently installed kinetix 5500 but only when my programing PC is connected to the machine network. Install and setup all went great over a 5 day period. Then all of a sudden I started to get this fault. Sometimes 100 times in an hour. As soon as I go offline, and unplug my PC the problem goes away. I have also tried another PC connected to the Machine network and still get the same result. Sometimes machine can run for hours with my PC connected with no problem. I do not have to be online with controller for fault to occur.
Setup:
I have the 2 K5500's ethernet ports daisy chained together, and then connected via shielded CAT 6 cable directly to port 2 of the Compact Logix Controller
Coarse Update is set to 3.5ms and utilization's are at 33% and below.(I have tried the default 2ms with same results)
Ethernet modules are configured with FW rev 7.013.
Machine network is isolated.(not connected to plant network or internet)
Equipment:
Compact logix L33ERM Running version 30.01.
There are a total of four servos in this system all running over ethernet. 2 Kinetix 350's(not affected), and 2 kinetix 5500's.
I have tried:
separate ethernet cables for each drive ran through a switch
different ethernet cables
resetting coarse update speed
connecting a different PC for programming
I am just not sure where else to go with this. Thanks in advance for any help.