Siemens SIMATIC PLC 6AG1540-1AB00-7AA0 SIPLUS S7-1500,    CM PTP RS422/485 BA    COMMUNICATION MODULE FOR    SERIAL CONNECTION RS422, RS485    FREEPORT, 3964(R), USS,    19200 KBIT/S,    15-PIN SUB-D FEMALE CONNECTOR    -40 ... +70 DEGREE C    WITH CONFORMAL COATING    BASED ON 6ES7540-1AB00-0AA0 6AG15401AB007AA0