ABB Example Program¶
This section introduces the example program provided with Mech-Center and the operations required to perform an actual pick-and-place task.
Please download the pick-and-place sample first.
Check the section corresponding to your own application setup:
Before running the program, please make sure that:
You have loaded the Standard Interface program onto the robot and can establish communcation with Mech-Center.
You have completed the extrinsic parameter calibration with the calibration program or by manually adding calibration points.
Mech-Vision and Mech-Viz projects are created and set to autoload.
The Project list in , and the order of Mech-Vision projects have been adjusted according to actual needs.
is synced by clicking onThe TCP has been correctly specified.
The robot speed is set to a low value, so that the operator can notice any unexpected behavior before accidents occur.
Obtain Vision Results from Mech-Vision¶
47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 | PROC Vision_Sample_1()
!**********************************************************
FUNCTION:Eye to Hand simple pick and place with Mech-Vision
! mechmind, 2022-5-1
!**********************************************************
AccSet 100, 100;
VelSet 100, 5000;
MoveAbsJ Home\NoEOffs,v3000,fine,Gripp1TCP;!move robot home position
MoveL camera_capture,v500,fine,Gripp1TCP;
PoseNum:=0;
!Set ip address of IPC
MM_Init_Socket "127.0.0.1",50000,60;
WaitTime 0.1;
!Set vision recipe
MM_Switch_Model 1,1;
!Run vision project
MM_Start_Vis 1,1,2;
WaitTime 1;
MM_Get_VisData 1,LastData,PoseNum,Status;
IF Status<>1100 THEN
Stop;
ENDIF
MM_Get_Pose 1,pickpoint,label,speed1;
MoveL RelTool(pickpoint,0,0,-100),v1000,fine,Gripp1TCP;
MoveL pickpoint,v300,fine,Gripp1TCP;
Stop;
!Add object grasping logic here.
MoveL Offs(pickpoint,0,0,100), v1000, fine, Gripp1TCP;
MoveL waypoint1,v1000,z50,Gripp1TCP;
MoveL RelTool(drop,0,0,-100),v1000,fine,Gripp1TCP;
MoveL drop,v300,fine,Gripp1TCP;
Stop;
!Add object releasing logic here.
MoveL Offs(drop,0,0,100), v1000, fine, Gripp1TCP;
MoveAbsJ Home\NoEOffs,v3000,fine,Gripp1TCP;
RETURN ;
ENDPROC
|
Program Logic¶
Move the robot to HOME position.
Move the robot to the image capturing pose.
Initialize communication with MM_Init_Socket.
If parameter recipes are used in the Mech-Vision project, the recipe to be used is set with MM_Switch_Model.
Run the Mech-Vision project with MM_Start_Vis.
Wait for 1 second. Under Eye-In-Hand, this WaitTime instruction is required to make sure the robot stays still until image acquisition is completed. Under Eye-To-Hand, this WaitTime instruction can be replaced with MoveL or MoveJ.
Obtain the vision results from Mech-Vision.
Check if the returned status code indicates any error. If an error code is returned, the program is stopped.
Move the robot to the picking pose and perform picking.
Move the robot to a waypoint between the picking pose and placing pose.
Move the robot to the set placing pose and perform placing.
Return the robot to HOME position.
The following parts should be modified according to your actual needs.
Define the TCP¶
The TOOL is defined as Gripp1TCP. Change the value of Gripp1TCP to the actual TCP values.
Define HOME position¶
Set the Home position in Home.
Teach the Image Capturing Pose¶
Record the image capturing pose in camera_capture.
Teach the Waypoint(s)¶
Waypoints are intermediate poses between the picking pose and placing pose. They are used to ensure that the robot doesn’t collide with the surrounding when moving between the picking and placing poses.
You can add one or more waypoints to waypoint.
Teach the Placing Pose¶
Record the placing pose in drop.
Define Z-Offset from Picking/Placing Pose¶
Z-offset distances relative to the tool frame from the picking/placing pose are used to ensure collision doesn’t occur when the robot is approching or departing the picking/placing pose.
Adjust the following commands according to your actual needs.
MoveJ RelTool(pickpoint,0,0,-100): the Z-offset when approching the picking pose is set to 100. Robot will move to 100 mm above the picking pose.
MoveL Offs(pickpoint,0,0,100): the Z-offset when departing the picking pose is set to 100. Robot will move to 100 mm above the picking pose.
MoveL RelTool(drop,0,0,-100): the Z-offset when approching placing pose is set to 100. Robot will move to 100 mm above the placing pose.
MoveL Offs(drop,0,0,100): the Z-offset when departing the placing pose is set to 100. Robot will move to 100 mm above the placing pose.
Add Object Grasping and Releasing Logics¶
Add logic for controlling the tool action when picking or placing the object.
Obtain Planned Path from Mech-Viz¶
85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 | PROC vision_sample_2()
!**********************************************************
! FUNCTION:Eye to Hand simple pick and place with Mech-Viz
! mechmind, 2022-5-1
!**********************************************************
AccSet 100, 100;
VelSet 100, 5000;
MoveAbsJ Home\NoEOffs,v3000,fine,Gripp1TCP;!move robot home position
MoveL camera_capture,v500,fine,Gripp1TCP;
PoseNum:=0;
!Set ip address of IPC
MM_Init_Socket "127.0.0.1",50000,60;
WaitTime 0.1;
!Set vision recipe
MM_Switch_Model 1,1;
!Run Viz project
MM_Start_Viz 1;
WaitTime 0.1;
!set branch exitport
MM_Set_Branch 1,1;
!get planned path
MM_Get_VizData 2, LastData, PoseNum, VisPosNum, MM_Status;
IF MM_Status<>2100 THEN
Stop;
ENDIF
FOR i FROM 1 TO PoseNum DO
count:=i;
MM_Get_Pose count,P{count},label1{count},speed{count};
ENDFOR
!follow the planned path to pick
FOR j FROM 1 TO PoseNum DO
count:=j;
MoveL p{count},v1000,fine,Gripp1TCP;
IF count=VisPosNum THEN
Stop;
!add object grasping logic here
ENDIF
ENDFOR
!go to drop location
MoveL RelTool(drop,0,0,-100),v1000,z50,Gripp1TCP;
MoveL drop,v500,fine,Gripp1TCP;!drop point
stop;
!add object releasing logic here
MoveL Offs(drop,0,0,100), v1000, fine, Gripp1TCP;
MoveAbsJ Home\NoEOffs,v3000,fine,Gripp1TCP;
RETURN ;
ENDPROC
|
Program Logic¶
Move the robot to HOME position.
Move the robot to the image capturing pose.
Initialize communication with MM_Init_Socket.
If parameter recipes are used in the Mech-Vision project, the recipe to be used is set with MM_Switch_Model.
Run the Mech-Viz project with MM_Start_Viz.
Obtain the planned path from Mech-Viz.
Check if the returned status code indicates any error. If an error code is returned, the program is stopped.
Store obtained target points in the planned path to P{} with a FOR loop.
Move the robot along the planned path with a FOR loop and perform picking.
Move the robot to a waypoint between the picking pose and placing pose.
Move the robot to the set placing pose and perform placing.
Return the robot to HOME position.
The following parts should be modified according to your actual needs.
Define the TCP¶
The TOOL is defined as Gripp1TCP. Change the value of Gripp1TCP to the actual TCP values.
Define HOME position¶
Set the Home position in Home.
Teach the Image Capturing Pose¶
Record the image capturing pose in camera_capture.
Teach the Waypoint(s)¶
Waypoints are intermediate poses between the picking pose and placing pose. They are used to ensure that the robot doesn’t collide with the surrounding when moving between the picking and placing poses.
You can add one or more waypoints to waypoint.
Teach the Placing Pose¶
Record the placing pose in drop.
Add Object Grasping and Releasing Logics¶
Add logic for controlling the tool action when picking or placing the object.
Define Z-Offset from Picking/Placing Pose¶
Z-offset distances relative to the tool frame from the picking/placing pose are used to ensure collision doesn’t occur when the robot is approching or departing the picking/placing pose.
Adjust the following commands according to your actual needs.
MoveL RelTool(drop,0,0,-100): the Z-offset when approching placing pose is set to 100. Robot will move to 100 mm above the placing pose.
MoveL Offs(drop,0,0,100): the Z-offset when departing the placing pose is set to 100. Robot will move to 100 mm above the placing pose.