CX-Programmer Dynamic Memory (Not Working)

theColonel26 · Oct 4, 2016

I'm writing a new program in CX-Programmer 9.6. I am trying to use dynamic memory allocation so I don't have to specify memory addresses for everything. I can't seem to get it to assign an address though.

[Ladder Section Name : Blah]
ERROR: Operand 1 uses symbol 'Blah' with an invalid address at rung 0 ( 0, 1 ).
ERROR: Operand 1 uses symbol 'Blah' with an invalid address at rung 1 ( 1, 0 ).
[Ladder Section Name : StartUpTest]
ERROR: Operand 1 uses symbol 'RunChangeValue' with an invalid address at rung 0 ( 0, 0 ).
[Ladder Section Name : Test]
ERROR: Operand 1 uses symbol 'DummyOut' with an invalid address at rung 3 ( 6, 1 ).
[Ladder Section Name : END]

MCP - 4 errors, 0 warnings.
The programs have been checked with the program check option set to Unit Ver.2.1.

I'm at a loss, I've used dynamic allocation in another preexisting program. This is my first from scratch program with CX-Programmer.

theColonel26 · Oct 4, 2016

Found it in the Manual....

Menu PLC > Memory Allocation > Automatic Allocation.

I guess it's not enabled by default. Which is weird. With Wago PLCs it is.

BobB · Oct 4, 2016

Most SIs I know prefer to allocate memory - I certainly do. Then you just have to type in a number and not try and find a symbol.
Default is not enabled - standard for Omron.

CX-Programmer Dynamic Memory (Not Working)

theColonel26

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theColonel26

Lifetime Supporting Member

BobB

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