Do a search on the forum.
References have been provided in past posts on where to get the PCIS software (AB gives it away now) and where you can get third-party communication cables and adaptors as well as how to get the PCIS software manuals and SLC100 manuals.
Be advised, DOS is required. PCIS will run under winXP but it will run afoul of the OS when it tries to access the serial port.