How to convert Hex to Dec in Codesys ST?

Question

I'm using Codesys V3 ST language I'm writing a code to communicate motor controller unit which uses CANOpen protocol I want to use CAN raw messages to communicate

I put CAN bus messages bytes in an array -- myDataFF82 : ARRAY [0..7] OF BYTE; //(incoming message)

Then I put together first byte and second byte

raw := UserVarGlobal.myDataFF82[1] ; 
raw1 := UserVarGlobal.myDataFF82[0] ;
raw2 := MEM.PackBytesToWord(byHighByte:=raw1 , byLowByte:=raw); //real message is '01F4' which is Hex

At this point I want to convert '01F4' into Decimal value ('01F4' Hex is '500' in Dec)

I don't see any function to do that in Codesys Can you help?

Thank you in advance

Either you are mixing something, or I can't understand what you are trying to do. Talking about hexadecimal/decimal numbers only makes sense when we are dealing with strings. If you have a WORD with some value, you can already use it however you want, no conversion is necessary. — Guiorgy
– Guiorgy, Commented Jul 6, 2024 at 13:01
Thanks @Guiorgy you gave me insight how to solve my problem. no conversion needed. cheers. — deepsdog
– deepsdog, Commented Jul 7, 2024 at 6:00

sekainoshihaisha · Accepted Answer · 2024-07-09 07:15:00Z

1

You do not convert HEX to DEC because there is no conversion, it is the same set of bits. It is only a matter of representation. You can see the number as a HEX or as a DEC

a := 16#01F4;
b := 500;

You assign equal value to a and b, but you write this value as HEX or DEC.

edited Jul 9, 2024 at 7:15

sekainoshihaisha

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answered Jul 8, 2024 at 14:38

Sergey Romanov

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1 Comment

deepsdog Over a year ago

Cheers thank you @Sergey Romanov

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