Q. on Modbus w/ Phoenix Contact ILC PLC

[FNC]

Hi,

I am using Phoenix Contact ILC 191 PLC for the first time. It has a built-in Modbus Server which works well for integers but I cannot get it to work for floating points.

I want to change a float into 2 consecutive registers which can then read easily by any Modbus client.

Has anyone ever done this with Phoenix Contact PLCs?

Thanks.

FC

 

[labeledas]

what is the exact error you are having, is it just bad data on a display or in the plc itself

 

[FNC]

Converting Real to INT

Hi,

My problem is that I cannot figure out how to convert 12.3 into two integers.

When I try to convert 12.3 into DINT or DWORD I end up with 12.

With Rockwell there was the CPW command which did this exaclty. I am not sure if Phoenix Contact PLCs can do the same thing.

 

[labeledas]

Are you using PC worx and what functions are you using to do the converts currently?

 

[FNC]

Hi,

I am using PC Worx for the first time.

I have tried REAL_TO_DINT and REAL_TO_DWORD. Neither gives me what I need.

Is there some other function block that I can use?

 

[labeledas]

all the real_to functions will round to a whole number.

I am wondering what happens if you dump your REAL value into your register and set that register as DWORD datatype or a WORD with a length of 2 if that will solve it, it should push it out as a binary number
01000001010001001100110011001101

I haven't used pcworx much so just shooting in the dark trying to help