HEIDENHAIN ND 780 - Handbuch (Seite 226)

102
II Technical Information
II - 4 D
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ta Int
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rf
ace
Wiring the connecting cable
The wiring of the connecting cable depends on the device being
connected (see technical documentation for external device).
Full wiring
Before the ND 780, and a PC can communicate, they need to be
connected to each other with a serial cable.
Pin assignment
Signal
Pin Assignment Function
1 No assignment
3 TXD - Transmitted data
2 RXD - Received data
7 RTS - Request to send
8 CTS - Clear to send
6 DSR - Data set ready
5 SIGNAL GND - Signal ground
4 DTR - Data terminal ready
9 No assignment
Signal Signal level
“1“= “active“ Signal level
“0“= “inactive“
TXD, RXD - 3 V to - 15 V + 3 V to + 15 V
RTS, CTS
DSR, DTR
+ 3 V to + 15 V - 3 V to - 15 V