Using SETR(635) in an FB

[Andy_P 7]

I'm trying to put together an FB that uses the SETR(635) instruction. The FB compiles if I directly enter the table number .i.e #0 into the instruction, but I would like to be able to pass this value in via an input parameter to the FB. Can't seem to manage this. Used Input, In/Out, Internal with setting an AT address. Always fails to compile with: ERROR: Operand 1 Memory area not valid. Is it not possible, or am I missing the point somewhere? (Most likely.) Thanks. Using CJ1M-CPU22 V4.0.

[Michael Walsh 268]

The Table Number entry point has to be a constant for this instruction. You can see below when you enter the values into the instruction that the record number has many options (all memory areas): But the table number has only one option, a constant (#): This can be seen when you try to use this instruction in your regular ladder program and this limitation holds true when you put it inside a function block.

[Andy_P 7]

Thanks Michael. I really should have seen that for myself!