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mshaver
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Is there a way to accomplish the following?

 

I want to end up with an array of pointers defined as follows:

ptr PosScaler(1)->Motor[1].CoordSf[6];

ptr PosScaler(2)->Motor[2].CoordSf[7];

ptr PosScaler(3)->Motor[3].CoordSf[8];

ptr PosScaler(4)->Motor[4].CoordSf[0];

 

ptr PosOffset(1)->Motor[1].CoordSf[32];

ptr PosOffset(2)->Motor[2].CoordSf[32];

ptr PosOffset(3)->Motor[3].CoordSf[32];

ptr PosOffset(4)->Motor[4].CoordSf[32];

 

And I want to be able to refer to the pointers in motion programs and PLC's using a local variable as an index, generally like the following:

{expression1} = {expression2} * PosScaler(myIndex) + {expression3} * PosOffset(myIndex)

 

Can I accomplish this or something functionally equivalent?

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You can do exactly this in your program or a header file (note your second set will overwrite the first set):

ptr PosScaler(1)->Motor[1].CoordSf[6];

ptr PosScaler(2)->Motor[2].CoordSf[7];

ptr PosScaler(3)->Motor[3].CoordSf[8];

ptr PosScaler(4)->Motor[4].CoordSf[0];

 

You can then use local variables in the index as in:

global myOtherVar

open prog myProg

local myVar

myOtherVar = PosScaler(myVar)

 

. . .

 

close

 

You cannot however have an expression on the left-hand side of the assignment operator (the "=" sign).

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So when I place the following in global definitions;

ptr PosScaler(1)->Motor[1].CoordSf[6];

ptr PosScaler(2)->Motor[2].CoordSf[7];

ptr PosScaler(3)->Motor[3].CoordSf[8];

ptr PosScaler(4)->Motor[4].CoordSf[0];

 

The right side is underlined in red with a message "syntax error, unexpected IDENTIFIER, EXPECTING '*', or ..." etc.etc.

 

Tried to compile. Will not compile. Yields same error message as directly above.

IDE = 1.6.0.109

???

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I assume the first line should go in global definitions

ptr PosScaler(5)->*;

 

Where should the remaining pointer definitions go?

In global definitions or in a plc?

PosScaler(1)->Motor[1].CoordSf[6];

PosScaler(2)->Motor[2].CoordSf[7];

PosScaler(3)->Motor[3].CoordSf[8];

PosScaler(4)->Motor[4].CoordSf[0];

 

What's happening is the first line, PosScaler(1)->Motor[1].CoordSf[6]; ends up underlined in red and the build fails. However, if I fiddle with it long enough, such as removing the bottom two lines and then putting them back, eventually I can get the red underline to go away and then the build succeeds.

 

Additionally, if I place any 3 of the above 4 lines in either global definitions or a PLC, the IDE accepts it. As soon as I add the 4th definition the IDE chokes and underlines the first definition in red and the build fails.

 

The IDE is extremely buggy, finicky, unrepeatable, unpredictable, and I have no idea whether something is really going to work or fail.

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All Global, CSGlobal and Pointer definitions should be placed in .pmh files under "Global Includes" folder under "PMAC Script Language".

If you use the exact code I posted earlier in a pmh file in "Global Includes" folder, you will not get any errors in download. Disregard the red squiggly line under the pointer assignment, which I believe is caused by language service. We will look into this problem.

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