Need help with subtracting a fixed value from a digital value

[tempname24756]

Basically I have a digital value I need to scale down using this equation:
'end_value = (D1-1000)/100' but I'm having trouble writing it down to my program.

I've created a local label which is of a VAR_CONSTANT type and the data type is word[signed], the value of this variable is 1000.

At the moment it looks like this

 -|/|--------[-P D1 var_1000 new_var] 

If I've understood this correctly the new value should be stored in 'new_var' but it remains 0. I'm out of ideas and I've tried to read Mitsubishi's "Q-series basic course(for GX developer)" manual.

The contacts and their names does not matter at the moment because all I want to do is (D1-1000)/100. I can add the code to the real program at a later stage when I have solved my issue.

Using GX works2

 

[osmanmom]

not familiar with this plc,just read the book,

my guess

LD X0
/P D0 K1000 D2
-P D2 K100 D4

OR

LD X0
/ D0 K1000 D2
- D2 K100 D4

 

[Donnchadh]

Hi


Looks like MITSUBSHI Plc to me

I would either use the mov instruction or use the monitor window to force the valve in

Donnchadh

 

[tempname24756]

not familiar with this plc,just read the book,

my guess

LD X0
/P D0 K1000 D2
-P D2 K100 D4

OR

LD X0
/ D0 K1000 D2
- D2 K100 D4

Hi


Looks like MITSUBSHI Plc to me

I would either use the mov instruction or use the monitor window to force the valve in

Donnchadh

Hi. I solved it by doing this.

Thanks for your input though.