Hardware configuration.
CNC 8070
5.
CENTRAL UNIT + MONITOR (ETX PLATFORM).
Connections.
·84·
(REF: 1911)
5.12.2 RS232 serial line connection.
Connector pinout.
Plug-in part. 9-pin female SUB-D type connector.
Cable characteristics.
Twisted-pair shielded cable should be used to minimize interference between cables, thus
preventing poor communication in long lengths.
Node connection.
The cable shield must be connected to the connector at both ends. It is recommended to
reference all the control and data signals to the same point (pin 5 GND), thus avoiding
reference points with different voltages because there could be voltage differences in long
lengths between the two ends of the cable.
Characteristic.
Type. Shielded. Twisted-pair, with a minimum wire section of 0.14 mm².
Capacitance. 164 pF/m (50 pF/ft).
Maximum length. At a baudrate of 19200 Bd, 15 m (50 ft) or a length equivalent to a capacitance
of 2500 pF.
• Simplified connection
• Full connection
Pin. Signal. Description.
1 DCD Carrier detect.
2 RxD Receive data.
3 TxD Send data.
4 DTR Data terminal ready.
5 GND Reference signal.
6 DSR Data set ready.
7 RTS Request to send.
8 CTS Clear to send.
9 RI Ring indicator.
1 ... 5
6 ... 9
TxD
RxD
DSR
6
3
2
5
9
8
7
Housing
Housing
1
4
CNC
RxD
TxD
DTR
GND GND
CTS
DTR
RTS
DSR
RTS CTS
TxD
RxD
DSR
6
3
2
5
9
8
7
Housing
Housing
1
4
CNC
RxD
TxD
DTR
GND GND
CTS
DTR
RTS
DSR
RTS CTS
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