In addition to these three videos, I would encourage anyone to understand the Ladder Logic 204: Auto Sequences post under the PLC tab, along with some of the other organizational posts. I did the following videos in Siemens since that is what most of the people in my Facebook group use. Other things that need to be considered scaling the speeds and encoder counts, creating DBs (Data Blocks) with tables for move positions and speeds, Mode Control, and other topics already discussed in previous videos and posts. There are several questions that would still need to be answered, and the brand of PLC and HMI were not specified. Now this is actually a full integration job when it comes down to it. Next step: Motor y goes down to 0 position and stop. After that: MOTOR X starts and turn a conveyor belt 6 cm and stop 2s. “When I set a distance in the HMI ex: x =100 cm and y=20, then press Ok, the motor Y goes up to 20 cm and stop 2 s. He is using ABB drives to control the motors. Here is the information he gave me: He has 2 motors, each with an encoder. Last week I covered a bit about how a Variable Frequency Drive interfaces with a PLC for control, this week I am going into a bit more depth on the code behind the control.Īfter last week’s post, Moussa gave me further information about his application via Facebook Messenger. Today’s post doubles as a Ladder Logic series post and an introduction to the last videos in the Siemens Step 7 Odyssey series on my YouTube channel.
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