The Lines Of The Rs-232-C/V.24 Serial Interface - HEIDENHAIN TNC 415 Technical Manual

The lines of the RS-232-C/V.24 serial interface:

Chassis GND
Transmitted data
Received data
Switch on transmission unit
Transmission readiness
Operational readiness
Received signal level
Terminal unit ready for service DTR
Signal ground
Peripheral
01.98 TNC 407/TNC 415/TNC 425
TxD
RxD
RTS
CTS
DSR
DCD
GND
TNC
2 TNC data interfaces 8-13