Device Servers - Networking & Communications
Device Servers - Networking & Communications
Device Servers - Networking & Communications
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The Limitations of Serial Ports• Dedicated connections only– Typically one PC/host per serial device– One protocol for all devices• Very limited distance– RS-232: 50 Ft. (15 m)– RS-422/485: 4000 Ft. (1200 m)• Poor performance– Typical speeds of 9,600bps to 115,200 bps (not Mbps)• Installation cost– Separate and dedicated cable per serial device