maexio
Lifetime Supporting Member
Hello, we currently have a Kinetix 6500 application with a Controllogix 72 series processor system. There are 7 Servo Drives connected in a linear topology to a 1756-EN2T (rev 4.3) module (Slot 2). In addition, there are 9 Powerflex 40 VFD's, 3 x FlexIO Enet modules, 1 x Generic Touch Screen, 1 x Murr Cube 20 on the Control network to a 1756-ENBT (Slot 0).
Both networks are separate, but with identical subnets (no IP overlap of course).
The problem we are having is that as soon as we connect to the Servo motors, all communications becomes painfully slow. Additionally, when we activate the Kinetix system we seem to lose communication consistency with our non-servo network, which is causing some timing of vfd accel / decel curves to vary between cycles.
We have adjusted the percentage of communications time up significantly, but it is getting to a limiting point.
All network switches are managed with IGMP snooping enabled.
Both networks are separate, but with identical subnets (no IP overlap of course).
The problem we are having is that as soon as we connect to the Servo motors, all communications becomes painfully slow. Additionally, when we activate the Kinetix system we seem to lose communication consistency with our non-servo network, which is causing some timing of vfd accel / decel curves to vary between cycles.
We have adjusted the percentage of communications time up significantly, but it is getting to a limiting point.
All network switches are managed with IGMP snooping enabled.