NDS/6000 & RCS/6000 FAQs

I cannot communicate with my RS-485 or RS-422 devices. What is the problem? What is the difference between RS-485 and RS-422 mode in Systech products? I have a Systech Network Device Server (RCS, POS, NPS, NDS or iNS/ixNS series) on a remote network and I can't see it with NativeCom. What do I need to do? I have a Systech Network Device Server (RCS, POS, NPS, NDS or iNS/ixNS series) on a remote network behind a firewall. What do I need to open in the firewall to use it with NativeCom? I have a timer expiration/network disconnected error message. What does that mean? I powered up my unit and it keeps blinking yellow. What is it doing? My status LED is XXX (pick a color). What does that mean? My unit is flashing red or orange and I cannot access it. What is wrong? Output works on my port server but I get no input. What's wrong? Why can't I communicate with one of the serial ports using the serial port on the back of my PC or laptop and HyperTerminal? How do I add a Windows printer on the NDS serial port? How do I use a port server with Honeywell Experion? How can I remotely access/monitor my unit?