Continuum Surelite EX 10, Operation And Maintenance Manual

Page: 50 / 114

Continuum Surelite Laser
40 996-0207
RS232 serial port
For customers who wish to control the laser from their own computer, Continuum has provided
two methods of external control; through an RS232 interface or with Direct Access Triggering
(DAT). With RS232 operation, ASCII commands are transmitted via the RS232 interface. The
RS232 is used with an IBM PC compatible or a Macintosh as long as the host computer
incorporates an RS232 control format. The DAT method of operation communicates with the
laser via TTL level signals. The explanation of DAT is on page
43 .
Software
Some softwares that allow the output of ASCII commands via the RS232 cable are:
•
Procomm for the Mac
•
Windows 3.x Terminal for the PC
•
Windows 95\98 Hyper Terminal.
To enable RS232
1. Make up a female-to-female null modem cable not to exceed 50 ft. (15.6m) in length.
See Figure 26 for wiring diagram and pin designation.
Figure 26 Wiring diagram and pin designation
Pin # Signal Description
1 + 12 V (DCD not used)
2 RxD (receive data)
3 TxD (transmit data)
4 + 12 V (DTR not used)
5 GND
6 + 12 V (DSR not used)
7 + 12 V (RTS not used)
8 CTS (clear to send)
9 (not used)
Pin # Signal Description
1 Output handshake
2 Input handshake
3 Transmit data -
4 Sig gnd
5 Receive data -
6 Transmit data +
7 Clock input
8 Receive data
Note: If the computer has a 25 serial port connector, an adapter is needed to
bring the 25 pin connector down to a 9 pin.
2.
Install cable between the computer RS232 port and the 9 pin D connector on the front
panel of PCU labeled
RS232
.