Installing API-232 ..................................................................................................................... 4-5
DOS API-232 Library ................................................................................................................4-5
Utilities......................................................................................................................................4-5
RS-485 Programming ................................ ................................ ................................ ........4-8
Automatic Data Direction Control Mode (Recommended).......................................................... 4-8
By RTS Mode (For back-compatibility) ...................................................................................... 4-8
Connection Cable and Cable Wiring.................................. 5-1
RS-422 Cable Wiring................................ ................................ ................................ .........5-1
RS-485 Cable Wiring................................ ................................ ................................ .........5-3
Impedance Matching and Termination Resistors................................ ................................ 5-4
Troubleshooting............................................................... 6-1
General Troubleshooting................................ ................................ ................................ ....6-1
Windows NT................................ ................................ ................................ ...................... 6-4
Windows 95/98................................ ................................ ................................ .................. 6-5
DOS ................................ ................................ ................................ ................................ ..6-6
Technical Reference ........................................................A-1
Specifications ................................ ................................ ................................ ................... A-1
UART TI550C................................ ................................ ................................ ................... A-2
PC I/O Port Address Map................................ ................................ ................................ .. A-2
Installing CI-132 Series under Compatible Systems................................ .......................... A-3
SCO UNIX/XENIX .................................................................................................................... A-3