
19.FUNCTIONS FOR HIGH-SPEED CUTTING NC FUNCTIONS B-63322EN/03
- 250 -
- Electrical interface
The following which interfaces are provided as standard specifications.
1) RS-232-C interface
2) RS-422 interface (Note 1)
RS-232-C RS-422
Interface Serial voltage interface
(start-stop system)
Balance transmission serial
interface (start-stop system)
Baud rate 50 – 19200 baud rate
(Note 2)
50 – 86400 baud rate
(Note 1)
Cable length
(MAX.)
100m (4800 baud or less)
50m (9600 baud)
15m (19200 baud)
It differs depending on I/O
devices.
Approximately 800m
(9600 baud or less)
50m (19200 baud or more)
NOTE
1 When the baud rate exceeding 38400 BPS is used,
the synchronization of reception clock is required.
Prepare the TT (*TT) and RT (*RT) signals.
2 When the baud rate used is 19200 baud or more, use
the RS-422 interface.
- Software interface
The following four protocols for communication between the remote
buffer and host computer are provided. The protocol meeting the
requirement of specifications of connection device can be selected by
setting a parameter.
Protocol Features of protocol
Interface
used
Transfer
rate (Max.)
RS-232-C 19200 BPSProtocol A It is the handshake system where transmit/receive is repeated
between the both.
RS-422 86400 BPS
Expansion protocol A It is nearly the same as the protocol A. However, the NC
program can be transferred at high-speed so that it can be
applied to the high-speed DNC operation.
RS-422 86400 BPS
Protocol B It is the system for controlling the communication between the
both by the control code output from the remote buffer.
RS-232-C 19200 BPS
Expansion protocol B The control system is the same as that of protocol B.
However, it allows the transmission speed to be increased. In
this case, it is required to receive the reception
synchronization clock from the source.
RS-422 86400 BPS
NOTE
The average data transfer speed becomes smaller
than the maximum transfer speed.