ACTiSYS ACT-IR100S - Manual (Page 9)

Example Connection Reference #2: PC Terminal (DTE) Connection
IR100S+ I/F < Cross Cable > PC Terminal(DTE)
RxD RxD : Data Receiving
(RD) (RD) Only valid with received data
when the DCD (CD) signal is on.
TxD TxD : Data Transmission
(SD) (SD) Valid with sending data when
RTS (RS), CTS (CS), DSR (DR),
DTR (ER) are on.
/DTR / DTR : Data Terminal Ready
(ER) (ER) Turns ON when the device
is able to send and receive.
/DSR / DSR : Data Set Ready
(DR) (DR) Turns ON when the device
is able to send and receive.
/RTS / RTS : Transmission Request
(RS) (RS) Instructs the device to be in
transmission mode. The terminal
is turned on before transmission.
/CTS / CTS : Transmissible
(CS) (CS) Indicates that the device is able
to transmit. When CS is ON the
device is able to receive.