Omron PLC - how to make cable

Hello,

I have Omron cx-programmer software, and I want install this software on Siemens Simatic Field PG M3 computer.
But there is a problem, because Siemens computer have only 25-pin female RS-232 port.
I want to make cable to connecting to Omron CJ1M-CPU21,
but I can`t find how to make connecting cable.
Can anybody help me?

Use an off the shelf DB25 to DB9 adapter and buy the programming cable from OMRON.
The CJ1 PLC is usually programmed via the the peripheral port using a CS1W-CN226 cable.
If you wish to use the Serial port use C200H-CN229-EU.

OR

Make your own cable and connect to the Serial port in Host Link mode. See attachment.