Fagor CNC 8070, Конфигурация оборудования

Страница: 85 / 276

Hardware configuration.
CNC 8070
CENTRAL
UNIT + MONITO
R (ETX PLATFORM).
5.
Conn
ecti
ons.
·85·
(R
EF
: 1911)
5.12.3 RS422 serial line connection.
Connector pinout.
Plug-in part. 9-pin female SUB-D type connector.
The reserved pins must NOT be used in any case.
Cable characteristics.
Twisted-pair shielded cable should be used to minimize interference between cables, thus
preventing poor communication in long lengths.
Node connection.
Line terminating resistor.
Interconnection of modules.
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 0.20 mm² (24 AWG).
Impedance. 120

.
Maximum length. 15 m (50 ft).
All the elements of the bus must have the line terminating resistor
activated. The central unit has the resistor inside at pins 2 and 3; to
activate it, jumper pin 2 with pin 8 and pin 3 with 9.
Pin. Signal. Description.
1 - - - - - -
2 LineTerm 120

line terminating resistor.
3 LineTerm 120

line terminating resistor.
4 - - - - - -
5 GND Reference signal.
6 TxD Send data.
7 /TxD Send data.
8 RxD Receive data.
9 /RxD Receive data.
1 ... 5
6 ... 9
Pin
GND
/Line Term
Line Term
5
4
3
2
1
9
8
7
6
/RxD
RxD
/TxD
TxD
RxD
/Line Term
Line Term
/TxD
TxD
GND
/RxD
8
3
2
7
6
5
9
/RxD
RxD
GND
Housing
Housing
1
4
CNC
/TxD
TxD