Allen Bradley-Double Integers

[Hunter 0]

Hi all.

In RS Logix 500. Does anyone know how to split a 32 bit double Integer into two single integers for Modbus transfers?

[pcmccartney1 141]

What have you tried thus far and with what results?

My assumption is that you are talking about the L file (generally L9:xx) contained within MicroLogix1100.

Have you tried a COP where the first input is the L9:xx file and the second input is the first of the two consecutive INT elements N7:yy & N7:zz.?  Then look at the data table to see is it split the DINT into the two INTs.

Have you tried doing two MVM into the two INT elements?

Edited 31 Jan 2018 by pcmccartney1

[Joe E. 259]

If it's an Lxxx register moving into 2 Nxxx registers, the COP instruction with length 2 should do it. It also works for floating point registers (Fxxx). Note that the COP instruction does a straight bit pattern copy, it doesn't move the numeric value. If you have to byte- or word-swap the registers, an MVM is where I would start but that will take a few steps to work.