Section 5.    Overview 
 
 
•  DHCP 
•  DNS 
•  FTP 
•  HTML 
•  HTTP 
•   
•  Micro-serial server 
•  Modbus TCP/IP 
•  NTCIP 
•  NTP 
•  PakBus over TCP/IP 
•  Ping 
•  POP3 
•  SMTP 
•  SNMP 
•  Telnet 
•  Web API
   
•  XML 
•  UDP 
•  IPv4 
•  IPv6 
•   
•   
 
5.3.6  Comms Hardware — Overview 
The CR800 can accommodate, in one way or another, nearly all comms options. 
Campbell Scientific specializes in RS-232, USB, RS-485, short haul (twisted 
pairs), Wi-Fi, radio (single frequency and spread spectrum), land-line telephone, 
cell phone / IP modem, satellite, ethernet/internet, and sneaker net (external 
memory). 
The most common comms hardware is an RS-232 cable or USB cable. These are 
short-distance direct-connect devices that require no configuration of the CR800. 
All other comms methods require peripheral devices; some require that CR800 
settings be configured differently than the defaults. 
 
 
5.3.7  Keyboard/Display — Overview 
The CR1000KD Keyboard/Display is a powerful tool for field use.    The 
CR1000KD, illustrated in figure CR1000KD Keyboard/Display
 (p. 81), is purchased 
separately from the CR800. 
The keyboard/display is an essential installation, maintenance, and 
troubleshooting tool for many applications. It allows interrogation and 
configuration of the CR800 datalogger independent of other comms links.    More 
information on the use of the keyboard/display is available in    Custom Menus — 
Overview
 (p. 82). The keyboard/display will not operate when a USB cable is 
plugged into the USB port.