SCANTECH ID (Champtek company) Discovery SG-20 - Manual (Page 116)

108 Appendices
H-3 DRIVERS & OPERATING SYSTEMS
For which Operating Systems (OS) is a Discovery RS-485 network driver available?
WIN 95/98, WIN NT, WIN 2000, WIN XPSCO UNIX, LINUX and Solaris.
What does this driver actually do?
The general function of the Discovery RS-485 network driver is:
Data routing, data formatting/packaging, error correction, terminal control
(switch on/off terminals etc). The driver features an intelligent polling mechanism
(for automatic priority adjustment), up to 32 terminals are addressable and the
driver creates an open interface to the application software.
How does the Back Office computer system talk to the Discovery under WIN
NT/95/98/2000/XP?
RS-485: By means of the Scantech driver SG20.DLL to be installed on the host
(on older systems SG.DLL could still be used).
RS-232/RS-422: Via the Scantech driver SG20.DLL or directly to the COM port.
(On older systems SG.DLL could still be used).
Ethernet: using the standard TCP/IP protocol. To interface your application with
the Discovery we have some source code examples included on the CD and
additionally U-Start shows the exchanged commands on its simulated Discovery
screen.
What is the SG20.DLL?
This is a library of functions under MS-Windows including drivers for the RS-485
network.
Does the Discovery work under DOS?
The Discovery will work under DOS (direct access to the COM port in RS-232 and
RS-422 mode), however Scantech no longer supports the old SG-10 DOS network
driver.
H-4 INTERFACES & CABLES
Which cables are supplied by Scantech?
Refer to the remark in at the end of Appendix A.