Hi, i have the same issue, i want to campare files .ARC expecific DP, I want to campare with other machine cnc, but i did not find a software or some tool. 

We have sinumerik simatic 300.

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Split from Compare.arc files.

Hello, 
First of all,
 you have to specify a little more precisely 
 what kind of control you have. 
 SINUMERIK SIMATIC fits 840Dpl and 840Dsl

CMC 

https://support.industry.siemens.com/cs/az/en/view/109823415

the software from the link can compare ARC and DSF archives.

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or you compare with Notepad++ or similar. 
The ARC files are normal text files, 
only the PLC data is stored in binary form, 
For the drive data, it depends on the setting 
when creating the archive, whether binary or text