Practice missions
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Practice missions
Mission 48 · Pro PLC programming exercise

Down, grip, up, across

Step a pick and place through its sequence, every move confirmed.

Move each part from the pick nest to the place nest, waiting for a after every move, and stop with a fault if the part is lost on the way.

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The 3D pneumatic pick and place this mission runs on Pro mission
Test replay

One part, picked and placed

Test 1 of 3
Set by the testChecked by the testStep 19 of 19 · 1.4 s
Level
Applied
Time
About 35 min
Reward
+400 XP
Rig
3D pneumatic pick and place
Siemens editors
SCL, LAD
Rockwell editors
Structured Text, Ladder
Course stage
27. Machine lab 2: memory, timing and sequences
Automatic tests

What the tests check

  1. Waits for Auto, a part and a clear place nest.
  2. Each move waits for its sensor.
  3. Never moves sideways unless Up.
  4. Losing the part on the way stops the cell with Fault ON.
  5. Reset sends the gripper home, up first.
  1. Try it Use the buttons below the model and watch the rig respond.
  2. Test solution Every check runs on your code in one press.
  3. Replay If one fails, step through it one scan at a time to see why.
Why it matters

Where you’d see this on site

Assembly and packing lines are full of cells like this, each one a few cylinders stepping through a fixed order.

A cell that moves on a timer instead of a sensor eventually crashes the cup through a part. One that ignores a lost grip throws parts across the guarding.

Where you'd find thisMove parts with air: one step at a time, every step confirmed

Pick and place units feed presses, assembly stations and test rigs. Each move is a pneumatic cylinder with a reed switch at each end, so the controller always knows where the gripper is before it moves again.

  1. InfeedGravity track
  2. PickDown, grip, upYou are here
  3. PlaceAcross, down, release
  4. OutfeedBelt to the tote
On a real site: places, parts and safety
  • Assembly lines loading parts into fixtures
  • Packing machines placing products into trays
  • Test rigs moving parts between stations

Moving sideways with the cup down drags it through parts and fixtures: always confirm Up first.

Real cells cut the air and the outputs when the light curtain is broken.

The sizes, timings and cutaways are teaching choices, not a drawing of any one real installation.

Keep going

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