Error on conversion S5 S7

Hi everybody,

I try to convert a programm from S5 to S7 but i've got some problem.

I solved many of it but i couldn't solve the last one.

I have this instruction: CALL FC 82

                                    ( DUAL := MW244

                                    , SBCD := M255.0

                                    , BCD2 := MB247

                                    , BCD1 := MW242

                                   );

When i use compilation button, an error message appear : 

"AP type description not found for called or addressed block FC82"

"ilégal operation for DUAL"

What does it mean ?

So how can i do ?

What does dual mean ?

What is the similar programation for S7 ?

The FB cobnverts in S5 a integer value to BCD value.

In S7 classics can you make it with the convert command "I_BCD".

See attachments.

Ty ixo65 for your answer.

It help me and i understand better.

How can i write it in list ? 

In STL is the command "ITB".

L     "integer_value"
ITB
T     "BCD_word"

SO

CALL FC 82

( DUAL := MW244

, SBCD := M255.0

, BCD2 := MB247

, BCD1 := MW242

);

BECOME

CALL FC 82

L MW242

ITB

T MW244

This is that ?

testlogicle

SO

CALL FC 82

( DUAL := MW244

, SBCD := M255.0

, BCD2 := MB247

, BCD1 := MW242

);

BECOME

CALL FC 82

L MW242

ITB

T MW244

This is that ?

I see, you have not understand.

The S5-FB makes a BCD value with 6 places, the sign is in "SBCD".

The "ITB" command makes a BCD value with 3 places, the sign are bits 12-15 in the BCD word.

The integer value is in your case not MW242, because it is MW244.

With the ITB command you can't  convert integer values greater 999.

Is the integer value greater 999, then you must use the command DTB (see attachment).

Then you must first transfer the integer value to a double integer value.

Code:

L MW 244 (interger value greater 999)
ITD           (integer to double integer)
DTB         (double integer to BCD)
T MD300 (BCD value)

Hazem MHEDHBI

Please, can you anwser me why you have introduced the line T MD300 (BCD value) and what does it mean ? 

ixo65

The S5-FB makes a BCD value with 6 places, the sign is in "SBCD".

The "ITB" command makes a BCD value with 3 places, the sign are bits 12-15 in the BCD word.

The integer value is in your case not MW242, because it is MW244.

With the ITB command you can't  convert integer values greater 999.

Is the integer value greater 999, then you must use the command DTB (see attachment).

Then you must first transfer the integer value to a double integer value.