SKIPPING OPS WITH IF AND STATEMENTS

You can have the input comment at the start of the program, but put your If Goto commands after directly after your alignment code.

INVALID_OP =LABEL/
OP_INPUT   =COMMENT/INPUT,NO,FULL SCREEN=NO,
            ENTER A NUMBER CORRESPONDING TO THE CURRENT OPERATION
             
            (1) OPERATION 10
            (2) OPERATION 20
            (3) OPERATION 50
             
            ASSIGN/OPERATION=OP_INPUT.INPUT
            IF/OPERATION <> 1 AND OPERATION <> 2 AND OPERATION <> 3
              COMMENT/OPER,NO,FULL SCREEN=NO,AUTO-CONTINUE=NO,OVC=NO,
              INVALID INPUT
              GOTO/INVALID_OP
            END_IF/
            SELECT/OPERATION
              CASE/1
OP10_ALN       =ALIGNMENT/START,RECALL:MANUAL_ALN,LIST=YES
                ALIGNMENT/END
                GOTO/OP_10_LABEL
              END_CASE/
              CASE/2
OP20_ALN       =ALIGNMENT/START,RECALL:MANUAL_ALN,LIST=YES
                ALIGNMENT/END
                GOTO/OP_20_LABEL
              END_CASE/
              CASE/3
OP50_ALN       =ALIGNMENT/START,RECALL:MANUAL_ALN,LIST=YES
                ALIGNMENT/END
                GOTO/OP_50_LABEL
              END_CASE/
            END_SELECT/
OP_10_LABEL=LABEL/
$$ NO,
            ENTER OPERATION 10 CODE
             
            GOTO/END
OP_20_LABEL=LABEL/
$$ NO,
            ENTER OPERATION 20 CODE
             
            GOTO/END
OP_50_LABEL=LABEL/
$$ NO,
            ENTER OPERATION 50 CODE
             
            GOTO/END
            
END         =LABEL/

EDIT: Added actual PC-DMIS code with input error checking.

Jesse, this sounds so simple that I should have been able to guess and get it right! Why I didn't this never occurred to me I don't know. Thank you!

Use an operator comment of type Input, and explain what each input value does. Then have it GOTO where the first feature for that input value is.

C1         =COMMENT/INPUT,NO,FULL SCREEN=NO,
            1 For Part Number xxxxx
            2 For Part Number xxxxx
            3 For Part Number xxxxx
            IF_GOTO/C1.INPUT == 1,GOTO = PART1
            IF_GOTO/C1.INPUT == 2,GOTO = PART2
            IF_GOTO/C1.INPUT == 3,GOTO = PART3
PART1      =LABEL/
$$ NO,
            Alignment data for Input 1
PART2      =LABEL/
$$ NO,
            Alignment data for Input 2
PART3      =LABEL/
$$ NO,
            Alignment data for Input 3

What Jacob posted is also a very good solution for this.

You're welcome.  If you're using a different alignment for each operation you'll need to use one of the other solutions suggested here though.

I appreciate the answers, but I'm having the same problem with each. If I select op1 it will run through the alignments, and all the op1 features, but it continues on to op2, even though I have an END_IF/ after op1. This is just a sample I'm using while trying to work this out, so yeah, there really is just two diameters in op1.

I did get it to skip op1 and jump to op2. 

C1 =COMMENT/INPUT,NO,FULL SCREEN=NO,

1
2
3

IF/C1.INPUT == 1
CIR3 =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,IN,LEAST_SQR
THEO/<4,-2,0>,<0,0,1>,2
ACTL/<4,-2,0>,<0,0,1>,2
TARG/<4,-2,0>,<0,0,1>
START ANG=0,END ANG=360
ANGLE VEC=<1,0,0>
DIRECTION=CCW
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
NUMHITS=4,DEPTH=0.0787,PITCH=0
SAMPLE METHOD=SAMPLE_HITS
SAMPLE HITS=0,SPACER=0.0197
AVOIDANCE MOVE=NO
FIND HOLE=DISABLED,ONERROR=NO,READ POS=NO
SHOW HITS=NO

CIR4 =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,IN,LEAST_SQR
THEO/<2,-4,0>,<0,0,1>,2
ACTL/<2,-4,0>,<0,0,1>,2
TARG/<2,-4,0>,<0,0,1>
START ANG=0,END ANG=360
ANGLE VEC=<1,0,0>
DIRECTION=CCW
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
NUMHITS=4,DEPTH=0.0787,PITCH=0
SAMPLE METHOD=SAMPLE_HITS
SAMPLE HITS=0,SPACER=0.0197
AVOIDANCE MOVE=NO
FIND HOLE=DISABLED,ONERROR=NO,READ POS=NO
SHOW HITS=NO
END_IF/

L2 =LABEL/
CIR5 =FEAT/CONTACT/CIRCLE/DEFAULT,CARTESIAN,IN,LEAST_SQR
THEO/<6,-4,0>,<0,0,1>,2
ACTL/<6,-4,0>,<0,0,1>,2
TARG/<6,-4,0>,<0,0,1>
START ANG=0,END ANG=360
ANGLE VEC=<1,0,0>
DIRECTION=CCW
SHOW FEATURE PARAMETERS=NO
SHOW CONTACT PARAMETERS=YES
NUMHITS=4,DEPTH=0.0787,PITCH=0
SAMPLE METHOD=SAMPLE_HITS
SAMPLE HITS=0,SPACER=0.0197
AVOIDANCE MOVE=NO
FIND HOLE=DISABLED,ONERROR=NO,READ POS=NO
SHOW HITS=NO

You need to have a label at the next part of the program each input needs to drive to. Since all the alignments are at the top, each one needs a GOTO to prevent PC-DMIS from going to them. Even if your input is to go to OP1, it will still execute all code below it. Including the OP2

So at the end of your alignment feature you need to put a GOTO and whatever the label name you choose to continue the routine. If they all share the same program after the alignment, then just include 1 GOTO, if they do not, you'll need to include a GOTO for the reporting section as well

ERROR1      =LABEL/
C1         =COMMENT/INPUT,NO,FULL SCREEN=NO,
            1 For Part Number xxxxx
            2 For Part Number xxxxx
            3 For Part Number xxxxx
            IF/C1.INPUT <> 1 AND C1.INPUT <> 2 AND C1.INPUT <> 3
              COMMENT/OPER,NO,FULL SCREEN=NO,AUTO-CONTINUE=NO,OVC=NO,
              Invalid entry
              GOTO/ERROR1
            END_IF/
            IF_GOTO/C1.INPUT == 1,GOTO = PART1
            IF_GOTO/C1.INPUT == 2,GOTO = PART2
            IF_GOTO/C1.INPUT == 3,GOTO = PART3
PART1      =LABEL/
$$ NO,
            Alignment data for Input 1
            GOTO/ROUTINE1
PART2      =LABEL/
$$ NO,
            Alignment data for Input 2
            GOTO/ROUTINE2
PART3      =LABEL/
$$ NO,
            Alignment data for Input 3
            GOTO/ROUTINE3
$$ NO,
            Routine 1 Data
ROUTINE1   =LABEL/
$$ NO,
            Routine 2 Data
ROUTINE2   =LABEL/
$$ NO,
            Routine 3 Data
ROUTINE3   =LABEL/

I would put a label at the end of the program and then put a GOTO to that label at the end of each operation.

I need to revisit this topic. I have a program with 3ops. My comment asks the operator to select which op they're running, 1,  2,  3 or 4 for the full program. If they select either 1, 2 or 3, it runs fine. If they select 4 however, it has issues. FYI, this program only has one alignment. I'm assuming there doesn't need to be any code if they select op4, as it should skip 1, 2, and 3.

This is the code below. If I select op 1, it will properly go to the XMINUS clearplane and run through op1. If however I select op 4, it will immediately try going through the part to XPLUS.

My last issue with this is that the probe makes unintended and unnecessary rotations when selecting independent ops. We use a 90° probe on this part and at some points it will point the probe straight up to ZPLUS, then rotate back to it's correct position. It appears it's reading the angle from the probe above it, but that code is in a different op so I'm unsure why it's using it.

A_B_C =ALIGNMENT/START,RECALL:BASIC_ALN,LIST=YES
ALIGNMENT/LEVEL,XMINUS,DAT_A
ALIGNMENT/TRANS,XAXIS,DAT_A
ALIGNMENT/ROTATE_CIRCLE,YPLUS,TO,DAT_B,AND,DAT_C,ABOUT,XMINUS
ALIGNMENT/TRANS,YAXIS,DAT_B
ALIGNMENT/TRANS,ZAXIS,DAT_B
ALIGNMENT/END

DATDEF/A,FEATURES=DAT_A,,
DATDEF/B,FEATURES=DAT_B,,
DATDEF/C,FEATURES=DAT_C,,

IF/C1.INPUT == 1
GOTO/OP1
END_IF/

IF/C1.INPUT == 2
MOVE/CLEARPLANE
CLEARP/XMINUS,-4,XMINUS,0,OFF
CLEARP/XMINUS,-25,XMINUS,0,ON
TIP/T1A90B90, SHANKIJK=-1, -0.001, 0.003, ANGLE=89.773
MOVE/POINT,NORMAL,<-4,0,0>
MOVE/POINT,NORMAL,<-4,0,350>
MOVE/POINT,NORMAL,<300,0,350>
GOTO/OP2
END_IF/

IF/C1.INPUT == 3

MOVE/CLEARPLANE
MOVE/POINT,NORMAL,<-23.975,3.559,395.34>
MOVE/POINT,NORMAL,<158.601,3.775,395.557>
LOADPROBE/3MM_X_50MM_5
TIP/T1A0B180, SHANKIJK=0.001, -1, -0.001, ANGLE=-0.15
GOTO/OP3
END_IF/

OP1 =LABEL/
CLEARP/XMINUS,-4,XMINUS,0,ON
MOVE/CLEARPLANE

Setup one startup point, let each OP block share this beginning point, all alignments needed for OP do inside OP block

Use goto command for navigating through operations.
put Labels in each OP with START and END label, in the beginning of block check for operator input and navigate to labels according it.