90/30 Floating Point Error

UKB

Member
Join Date
Aug 2014
Location
UK
Posts
56
Hello,

I am doing some floating point maths in a GE 90-30 PLC with a 374 CPU

When I view a register set up as a floating point register I cannot enter the value I intend.
Example.
Write a value of "4.8" to register %R0131
When I view %R0131 the PLC displays "4.8000001907"

Can anybody explain this?
float1.jpg
 

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