Any differences between the Control Logix 1756-L61 and L71 dealing with motion ?

Baker in Virginia · Jan 8, 2020

Good Morning ,

We had to change out a L61 with a L71 processor and it seems like our motion control is not the same . Have any of you run into similar issues with the L71 after changing . Does the 1756-M16 xxxx SERCOS module play different with the L70's processors ?

I imagine the firmware plays a part .

Thanks ,

Phil Buchanan · Jan 8, 2020

Baker in Virginia said:
Good Morning ,

We had to change out a L61 with a L71 processor and it seems like our motion control is not the same . Have any of you run into similar issues with the L71 after changing . Does the 1756-M16 xxxx SERCOS module play different with the L70's processors ?

I imagine the firmware plays a part .

Thanks ,

Depending on the complexity and needs of your project L7 series will be much faster and will handle more Axis than an L6 series

the_msp · Jan 8, 2020

One thing to consider other than firmware is the 71 CPU will be faster than the 61.

Are the motion routines in a periodic or continuous task?

Any differences between the Control Logix 1756-L61 and L71 dealing with motion ?

Baker in Virginia

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Phil Buchanan

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the_msp

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