Syntax error: Unexpected BARBAR

[HJTrost]

What is not to like about this PLC:

open plc Myplc1
p80 = Motor[1].PlusLimit || Motor[1].SoftPlusLimit ;
p81 = Motor[1].PlusLimit || Motor[1].SoftPlusLimit ;
close

The first double-bar draws the error message, the second does only if I remove the first one.  PlusLimit and SoftPlusLimit are advertised as Booleans in the Power Pmac SRM.

[steve.milici]

That is the “conditional combinatorial operator” for Boolean results of the logical “conditions” the arguments.

Your arguments are bit values. You should be using the Bit-by-bit version “|”:

open plc Myplc1

p80 = Motor[1].PlusLimit | Motor[1].SoftPlusLimit ;

p81 = Motor[1].PlusLimit | Motor[1].SoftPlusLimit ;

close

 

[HJTrost]

Thanks for the advice, that will work.  I was going to write instead

if (Motor[1].PlusLimit || Motor[1].SoftPlusLimit) p80 = 1 ; else p80 = 0 ;