Siemens PLC Motion Control Blocks: MC MoveVelocity

[@opospopos1109]

Hello! I am using TIA Portal V16, in my MC_MoveVelocity block I just have Axis, Execute, Velocity, Direction and Current inputs, how do I control acceleration?

[@jasonwattsae]

Hmm. I went in and actually played around with a project in V16 and realized that if you are using a S71200 PLC the interface for the TO and the MC blocks are VERY different than in my videos and all of my video projects are shot on a S7-1500. The S71200 is a great processor, but it is limited in processing power and so the blocks are optimized to make sure you don't run into trouble. With that in mind, it looks like you set the acceleration and deceleration limits in the TO configuration. Under Dynamics->General. That means that in order to change the acceleration in your program, you will need to modify the TO datablock directly outside of the MC block by using a MOV block and changing the value of the addresses below. .DynamicDefaults.Acceleration .DynamicDefaults.Deceleration