It is the same cable as DOS.
The programming cable is already NULL modem, so no adapters are reuired.
The cable is good for ALL micrologix range 1000, 1100, 1200 and 1500.
It is best to configure RSLinx as described previously before trying to connect with RSLogix.
Your PLC should appear in the "RSWho" window under the DF1 driver.
If the port configuration has been modified, it may be dissicult to connect without knowing the exact configuration. Examples are "DF1 Master/Slave", or DH485.
Some processors such as 1500 have a reset button to reset coms port to default, so you can connect using the DF1 driver.
The DH485 may not work on many computers, especially if you are using a USB serial adapter.