Siemens Simatic Field PG Manual page 99

Gender Changer for COM1
Use the Gender Changer (25-pin / 9-pin) to convert your COM1/ V24 / PLC
interface to a common 9-pole pin strip. Just plug the Gender Changer into the
COM1 socket and secure it with the two hex head screws.
The V24 and TTY interfaces for COM1 can be alternately used.
SIMATIC Field PG Manual
A5E00075760-04
Hardware Information
7-9