Example Program 20: MM_S20_Viz_PlanAllVision

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Program Introduction

Description

The robot triggers the Mech-Viz project to run. Then, the robot uses for loops to obtain all planned paths and perform picking and placing. In this example, once the camera captures an image, Mech-Viz will plan picking paths for all vision results. This program is applicable to scenarios where one image is used to perform picking for multiple times.

File path

You can navigate to the installation directory of Mech-Vision and Mech-Viz and find the file by using the Communication Component/Robot_Interface/FANUC/sample/MM_S20_Viz_PlanAllVision path.

Project

Mech-Vision and Mech-Viz projects

In the Mech-Viz project, the Reuse Vision Result parameter of the Vision Move Step must be enabled.
sample20 1

Prerequisites

  1. You have set up the Standard Interface communication.

  2. Automatic calibration is completed.
This example program is provided for reference only. Before using the program, please modify the program according to the actual scenario.

Program Description

This part describes the MM_S20_Viz_PlanAllVision example program.

The only difference between the MM_S20_Viz_PlanAllVision example program and the MM_S2_Viz_Basic example program is that MM_S20_Viz_PlanAllVision can use for loops to obtain all planned paths and perform picking and placing (this code of this feature is bolded). As such, only the feature of using for loops to obtain all planned paths and perform picking and placing is described in the following part. For information about the parts of MM_S20_Viz_PlanAllVision that are consistent with those of MM_S2_Viz_Basic, see Example Program 2: MM_S2_Viz_Basic. 
   1:  !-------------------------------- ;
   2:  !FUNCTION: trigger Mech-Viz ;
   3:  !project, plan all vision results ;
   4:  !and get all planned results ;
   5:  !using command 210 ;
   6:  !Mech-Mind, 2023-12-25 ;
   7:  !-------------------------------- ;
   8:   ;
   9:  !set current uframe NO. to 0 ;
  10:  UFRAME_NUM=0 ;
  11:  !set current tool NO. to 1 ;
  12:  UTOOL_NUM=1 ;
  13:  !move to robot home position ;
  14:J P[1] 100% FINE    ;
  15:  !initialize communication ;
  16:  !parameters(initialization is ;
  17:  !required only once) ;
  18:  CALL MM_INIT_SKT('8','127.0.0.1',50000,5) ;
  19:  LBL[1:recap] ;
  20:  !move to image-capturing position ;
  21:L P[2] 1000mm/sec FINE    ;
  22:  !trigger Mech-Viz project ;
  23:  CALL MM_START_VIZ(2,10) ;
  24:  !get planned path ;
  25:  CALL MM_GET_PLNDT(0,3,51,52,53) ;
  26:  !check whether planned path has ;
  27:  !been got from Mech-Viz ;
  28:  !successfully ;
  29:  IF R[53]<>2100,JMP LBL[99] ;
  30:  !save all waypoint data to local ;
  31:  !variables using for-loop, a ;
  32:  !maximum of 50 points are support ;
  33:  !supported ;
  34:  FOR R[10]=1 TO R[51] ;
  35:  R[11]=59+R[10]    ;
  36:  R[12]=R[10]*30    ;
  37:  R[13]=31+R[12]    ;
  38:  R[14]=32+R[12]    ;
  39:  R[15]=33+R[12]    ;
  40:  R[16]=34+R[12]    ;
  41:  R[17]=40+R[12]    ;
  42:  CALL MM_GET_PLJOP(R[10],3,R[11],R[13],R[14],R[15],R[16],R[17]) ;
  43:  ENDFOR ;
  44:  !parse pick cycle count, here ;
  45:  !suppose 3 points per planned ;
  46:  !path ;
  47:  R[30]=R[51] DIV 3    ;
  48:  R[31]=R[51] MOD 3    ;
  49:  !check if parsed data is valid; ;
  50:  !if not, retry to get planned ;
  51:  !path or add some error handling ;
  52:  !logic ;
  53:  IF R[30]<1) OR (R[31]<>0 THEN ;
  54:  PAUSE ;
  55:  JMP LBL[1] ;
  56:  ENDIF ;
  57:  !repeatedly run pick-and-place ;
  58:  !cycle using for-loop ;
  59:  FOR R[10]=1 TO R[30] ;
  60:  R[20]=R[10]-1    ;
  61:  R[21]=R[20]*3    ;
  62:  R[31]=60+R[21]    ;
  63:  R[32]=61+R[21]    ;
  64:  R[33]=62+R[21]    ;
  65:  !move to intermediate waypoint ;
  66:  !of picking ;
  67:J P[3] 50% CNT100    ;
  68:  !follow the planned path to pick ;
  69:J PR[R[31]] 50% FINE    ;
  70:J PR[R[32]] 10% FINE    ;
  71:  !add object grasping logic here ;
  72:  PAUSE ;
  73:J PR[R[33]] 50% FINE    ;
  74:  !move to intermediate waypoint ;
  75:  !of placing ;
  76:J P[4] 50% CNT100    ;
  77:  !move to approach waypoint ;
  78:  !of placing ;
  79:L P[5] 1000mm/sec FINE Tool_Offset,PR[2]    ;
  80:  !move to placing waypoint ;
  81:L P[5] 300mm/sec FINE    ;
  82:  !add object releasing logic here, ;
  83:  !such as "DO[1]=OFF" ;
  84:  PAUSE ;
  85:  !move to departure waypoint ;
  86:  !of placing ;
  87:L P[5] 1000mm/sec FINE Tool_Offset,PR[2]    ;
  88:  !move to intermediate waypoint ;
  89:  !of placing ;
  90:J P[4] 50% CNT100    ;
  91:  ENDFOR ;
  92:  !finish pick-and-place cycle, and ;
  93:  !jump back to camera capturing ;
  94:  JMP LBL[1] ;
  95:  END ;
  96:   ;
  97:  LBL[99:vision error] ;
  98:  !add error handling logic here ;
  99:  !according to different ;
 100:  !error codes ;
 101:  !e.g.: status=2038 means no ;
 102:  !point cloud in ROI ;
 103:  PAUSE ;

The workflow corresponding to the above example program code is shown in the figure below.

sample20

The table below describes the feature of using for loops to obtain all planned paths and perform picking and placing. You can click the hyperlink to the command name to view its detailed description.

Feature Code and description

Obtain the planned path

 
  24:  !get planned path ;
  25:  CALL MM_GET_PLNDT(0,3,51,52,53) ;

  • MM_GET_PLNDT: The command to obtain the planned path. The Vision Move waypoints obtained by this command contain Vision Move data and custom data (if any) in addition to poses, while Vision Move waypoints obtained by the MM_GET_VIZDATA command do not contain Vision Move data or custom data.

  • 0: Obtain the planned path from Mech-Viz.

  • 3: The format of the data that is expected to be returned, which is pose (in joint positions), motion type, tool ID, velocity, Mech-Viz Vision Move data, element 1 in custom data, ..., element N in custom data.

  • 51: The numeric register R[51], which stores the number of waypoints returned by the vision system.

  • 52: The numeric register R[52], which stores the position of the Vision Move waypoint (picking waypoint) in the path.

  • 53: The numeric register R[53], which stores the command execution status code.

Store the planned path by looping

 
  30:  !save all waypoint data to local ;
  31:  !variables using for-loop, a ;
  32:  !maximum of 50 points are support ;
  33:  !supported ;
  34:  FOR R[10]=1 TO R[51] ;
  35:  R[11]=59+R[10]    ;
  36:  R[12]=R[10]*30    ;
  37:  R[13]=31+R[12]    ;
  38:  R[14]=32+R[12]    ;
  39:  R[15]=33+R[12]    ;
  40:  R[16]=34+R[12]    ;
  41:  R[17]=40+R[12]    ;
  42:  CALL MM_GET_PLJOP(R[10],3,R[11],R[13],R[14],R[15],R[16],R[17]) ;
  43:  ENDFOR ;

  • Line 34: FOR indicates the start of a loop segment. R[10] is used to control the number of iterations (beginning at 1, the value of R[10] increments by 1 after each iteration until it surpasses the value set in R[51], at which point the loop ends). R[51] is the numeric register indicated by the third parameter in the MM_GET_PLNDT command. The numeric register stores the number of waypoints that are returned by the vision system. As such, R[10] can indicate the position ID of the current waypoint in the planned path.

  • Lines 35 to 41: Registers R[11], R[12], R[13], R[14], R[15], R[16], and R[17] store the joint positions, movement type, tool ID, velocity, Vision Move data, and custom data of the current waypoint, respectively.

  • Line 42: The MM_GET_PLJOP command stores the joint positions, motion type, tool ID, velocity, Vision Move data, and custom data of a specific waypoint in specified registers. This means that the joint positions, motion type, tool ID, velocity, Vision Move data, and custom data the waypoint represented by R[10] are sequentially stored in the registers indicated by R[11], R[12], R[13], R[14], R[15], R[16], and R[17].

Calculate the values for R[30] and R[31]

 
  44:  !parse pick cycle count, here ;
  45:  !suppose 3 points per planned ;
  46:  !path ;
  47:  R[30]=R[51] DIV 3    ;
  48:  R[31]=R[51] MOD 3    ;

This example assumes that each planned picking path consists of 3 waypoints. “R[51] DIV 3” indicates the quotient when the value of R[51] is divided by 3, and “R[51] MOD 3” indicates the remainder when the value of R[51] is divided by 3. R[30] indicates the total number of picking times. If R[31] is not set to 0, the planned number of picking waypoints is less than 3 (i.e., an error has occurred during path planning and a re-planning operation is needed).

Determine whether an error has occurred during path planning

 
  49:  !check if parsed data is valid; ;
  50:  !if not, retry to get planned ;
  51:  !path or add some error handling ;
  52:  !logic ;
  53:  IF ((R[30]<1) OR (R[31]<>0)) THEN ;
  54:  PAUSE ;
  55:  JMP LBL[1] ;
  56:  ENDIF ;

If the number of picking times (R[30]) is less than 1 or the value of R[31] is not 0, an error has occurred during path planning. You need to add processing code here, such as the code to restart the Mech-Viz project and then obtain the planned path.

Perform picking and placing by looping

 
  57:  !repeatedly run pick-and-place ;
  58:  !cycle using for-loop ;
  59:  FOR R[10]=1 TO R[30] ;
  60:  R[20]=R[10]-1    ;
  61:  R[21]=R[20]*3    ;
  62:  R[31]=60+R[21]    ;
  63:  R[32]=61+R[21]    ;
  64:  R[33]=62+R[21]    ;
  65:  !move to intermediate waypoint ;
  66:  !of picking ;
  67:J P[3] 50% CNT100    ;
  68:  !follow the planned path to pick ;
  69:J PR[R[31]] 50% FINE    ;
  70:J PR[R[32]] 10% FINE    ;
  71:  !add object grasping logic here ;
  72:  PAUSE ;
  73:J PR[R[33]] 50% FINE    ;
  74:  !move to intermediate waypoint ;
  75:  !of placing ;
  76:J P[4] 50% CNT100    ;
  77:  !move to approach waypoint ;
  78:  !of placing ;
  79:L P[5] 1000mm/sec FINE Tool_Offset,PR[2]    ;
  80:  !move to placing waypoint ;
  81:L P[5] 300mm/sec FINE    ;
  82:  !add object releasing logic here, ;
  83:  !such as "DO[1]=OFF" ;
  84:  PAUSE ;
  85:  !move to departure waypoint ;
  86:  !of placing ;
  87:L P[5] 1000mm/sec FINE Tool_Offset,PR[2]    ;
  88:  !move to intermediate waypoint ;
  89:  !of placing ;
  90:J P[4] 50% CNT100    ;
  91:  ENDFOR ;

The above code indicates that in the for loop, the robot moves to the 3 waypoints planned each time to complete the picking operation and then performs the placing operation. R[10] is used to control the number of iterations in the loop (i.e., the value of R[10] starts from 1 and increments by 1 after each loop iteration until it exceeds the value of R[30], at which point the loop ends. Each time the value of R[10] increases by 1, the value of R[21] is incremented by 3. The range 60+R[21] to 62+R[21] (i.e., R[31] to R[33]) corresponds to the register IDs where the 3 waypoints of each planned path will be stored.

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