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M172 shift left (SHL) operator different behaviour between hardware and simulation
Machine and Motion Control Forum
Support forum for Machine and Motion Control solutions, including Lexium MC12 and robotics, PacDrive, Modicon PLCs and I/Os, EcoStruxure Machine Expert Twin, … - from design, implementation to troubleshooting and more, by Schneider Electric
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Hi,
I have observed the following when using the SHL operator, below is in simulation
And on hardware (M172PDG18R)
Notice that uiTemp8, uiTemp9 differ. In both simulation and hardware, they are local variables within a program, and they are of UINT type.
I am using EcoStruxure Machine Expert v1.6.0, and the M172PDG18R is using bios version 668.14.
What is going on here?
Thanks.
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Hi,
it's a problem generated by the space allocated for the constant 1.
The workaround is specify the type to be assigned to the constant:
Link copied. Please paste this link to share this article on your social media post.
Link copied. Please paste this link to share this article on your social media post.
Hi,
it's a problem generated by the space allocated for the constant 1.
The workaround is specify the type to be assigned to the constant:
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