This family of 3 modules allows a 2-series processor to synchronize the Crestron clock with an Internet based time server. The module replaces the Extended Clock Driver symbol in your program, and automatically synchronizes the clock every night. A digital input also allows external manual synchronization.
A module is provided for each of three major time synchronization formats in use on the Internet (and in networking in general) today. All three modules set both the date and the time of the Crestron processor.
RFC 2030 "Simple Network Time Protocol " (SNTP) - UDP/IP Port 123
SNTP (RFC 1361, RFC 1769, and RFC 2030) is the most popular format used on the Internet today. It is also widely utilized on corporate and educational LANs under a wide variety of operating systems. This module is used to synchronize with NTP time servers (RFC 778, RFC 891, RFC 956, RFC 958 and RFC 1305) but does not perform any averaging of results. The connection is made on UDP/IP port 13. This is the preferred time server protocol, as it is widely available.
RFC 868 "Time" - TCP/IP Port 37
The "Time" protocol connects on TCP/IP port 37. This is preferred if a TCP/IP time server must be used, as it is more standardized than the RFC 867 "Daytime" protocol.
RFC 867 "Daytime" - TCP/IP Port 13
As the standards of this format are not well-defined in the RFC, the ControlWorks module has been based on the NIST implentation of RFC 867. Only NIST or NIST-style servers are supported. The demo program includes two recommended time servers.
(Note: ControlWorks ClockSync modules versions 6 and below were all based on RFC867 "Daytime")
These modules depend upon LAN-based or Internet-based time servers. While the module has been coded to redundantly check two different severs, ControlWorks Consulting does not guarantee the output thereof.
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