Installation manual
CNC 8055
CNC 8055i
CNC 8055 I CONFIGURATION
2.
SOFT: V02.2X
·81·
CNC structure
Connector X1 - RS232
It is a 9-pin SUB-D type male connector to connect the RS 232 C serial port.
The cable shield must be connected to the metallic hood at each end.
All the pins of this connector are opto-isolated.
Cable length.
EIA RS232C standards specify that the capacitance of the cable must not exceed 2500pF; therefore,
since average cables have a capacitance between 130pF and 170pF per meter, the maximum length
of the cable should not be greater than 15m (49ft).
Shielded cables with twisted-pair wires should be used to avoid communication interference when
using long cables.
Use shielded 7 conductor cable of 0.14 mm
2
section.
Transmission speed.
The CNC can operate at up to 115,200 Baud.
It is recommended to ground the unused pins in order to avoid erroneous control and data signal
interpretations.
Ground connection.
It is suggested to reference all control and data signals to the same ground cable (-GND- pin) thus,
avoiding reference points at different voltages especially in long cables.
Recommended RS232C interface connection
Pin Signal
1
2
3
4
5
6
7
8
9
DCD
RxD
TxD
DTR
GND ISO
DSR
RTS
CTS
- - -
Simplified connection Full connection.
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